9 best broan nutone roof vents

Product description

The Broan-NuTone 636 Steel Roof Cap is an easy-to-install vent for ventilation fans (bath, rec room, home gym, etc.). This cap provides reliable roof top ventilation and features both a back draft damper and bird screen, preventing outside air from entering the home and birds and small pests from entering duct work. Compatible with 3" and 4" ducting. Not suitable for dryer venting or flat roofs.

• This item is Broan-Nutone 636 Roof Vent Cap Only
• Used For Appliance Parts & Accessories,Miscellaneous Accessories
• The product is manufactured in United States
• Compatible with either a 3 in. or 4 in. round duct

User questions & answers

Question:	pulled flapper, replaced cheesy strip at front of flap and added to other three sides with 3/16 thick, 3/8 wide foam weather strip. is this ok
Answer:	No
Question:	What is the function of a roof vent cap? Does it keep rain water out of house, or just keep animals out
Answer:	I used one for my dryer venting through the roof and one for my bathroom fan vent. It is designed to keep the rain out and of course animals. This particular one is the "vent cap only", you really need to buy the same cap with the vent pipe or you will wind up having to buy the vent cap separately.
Question:	Can the damper get frozen shut in the winter
Answer:	It's possible, but not too likely. And even if it does, when the bath fan is turned on there will probably be enough air leakage that it would thaw the flap in a minute or two.
Question:	I have a 12 in wide metal roof and I need to put a vent to vent out heat from the roof . Would the brown 636 work to do this
Answer:	It could probably be made to work, but that's not what this vent cap was intended for. It has a flap in it that is normally closed, that would have to be removed. (This vent cap is normally used for a bathroom vent fan that will push the flap open when the fan is running.) Depending upon the style of metal roof you have, it may be difficult to get this vent cap sealed properly. This one is designed to have its upper flashing edge under shingles. If your "12 in wide metal" is in horizontal rows, that may work. Also, this vent cap is significantly smaller than what it normally used for roof vents. It will probably take three times as many of these as regular roof vents, to vent a given area of roof. In short, yes it probably could be used for a roof vent, but it would not be ideal.

Product description

Upgrade your range hood with Broan-NuTone's Roof Cap! This roof cap is constructed of durable 24-gauge CRCQ steel with a black electrically-bonded epoxy finish to serve as a functional and decorative addition to your home. This roof cap maximizes the air and sound performance of your Broan-NuTone ventilation fan or range hood. It's designed to fit with a 6" round duct for flexible installation. It includes a built-in, backdraft damper and bird screen provide a dependable roof cap you can rely on. The footprint measures 18.75" x 14.25" for a well-balanced fit. This roof cap is for use with range hoods, LoSone fans, and bathroom ventilation fans. Upgrade your home with Broan-NuTone's Roof Cap today!

• HIGH-QUALITY ROOF CAP: Roof cap for use with Range Hoods, LoSone Fans, and bath ventilation fans maximizes the air and sound performance of your fan or range hood
• DURABLE: Constructed of sturdy, 24-gauge CRCQ steel construction with a black electrically-bonded epoxy finish to ensure durability and lasting use
• RELIABLE: Includes a built-in, backdraft damper and bird screen provide a dependable roof cap you can rely on
• SECURE: Footprint is 18.75" x 14.25" for a secure, well-balanced fit
• EASY INSTALLATION: Roof cap is designed to fit with a 6" round duct to provide a simple, flexible installation

User questions & answers

Question:	I is said to keep out birds, does it have a screen that would keep out yellow jacket
Answer:	Not really but a shelf or cabinet would be nice
Question:	Does the wind cause it to chatter
Answer:	Yes! The model number for the white is 403601.
Question:	Can this be used to vent a cooktop hood
Answer:	I had to return this item as the photo shows a 7" round outlet for exhaust on top but the item had no such outlet. I purchased the correct unit from another source and it has the outlet, round 7"
Question:	Can this be installed on a new residential steel roof
Answer:	No, it does not require a power cord. You have to wire it in to the existing connections.

Product features

Broan 634M Roof Cap, For Up to 6-Inch Round Duct, Black

Maximize the air and sound performance of a Broan ventilation fan or range hood using one of Broan’s wide variety of ducting accessories. Made of 24-gauge CRCQ steel construction with a black electrically-bonded acrylic finish for durability and long life.

Product description

4" duct collar for use with Broan roof vent cap for easy attachment of 4" round duct. Product is manufactured in United States. This product meets customer requirement.

• 4" duct collar for use with Broan roof vent cap for easy attachment of 4" round duct
• Product is manufactured in United States
• This product meets customer requirement

User questions & answers

Question:	what size hole saw do i need to install this
Answer:	1/8" to 1/4".....larger than the typical 4" or 6" pipe collar to be installed, well seated & sealed .
Question:	Could someone be specific about how to screw this into the roof vent? I tried and failed to get this into a 4.0 inch vent hole
Answer:	The lip of the Duct collar twists onto the bottom of the roof vent cap. So you’re not screwing it in with a screwdriver. You have to get it aligned and then twist it to lock it in.
Question:	Hi folks. can i install the collar after installing the 636 vent cap? or do i have to attach this collar first then install the vent cap? thanks
Answer:	I can't speak specifically to the 636 cap, as I've been unable to verify that the 636 requires a duct collar. If you've already determined that the 636 needs the collar, then you can definitely attach it after installing the vent cap. The only thing to be (very, very!) careful of is that you match the hole in the vent cap with the hole in the roof so that the duct collar can slide through the hole in the roof cleanly and meet up with the threaded hole on the bottom of the vent cap. My vent cap was installed by roofers who didn't make sure the holes were lined up, so I had to ask them to come back out and move the vent cap before I could attach the duct collar from inside the attic. Hope this helps!
Question:	Ok lame question. Just trying to picture the installation: which side of this collar attaches to the 636 vent? The "finished" or "serrated
Answer:	Your duct attaches to the corrugated , or crimped side. On the "finished side there is a lip with a slice and you screw it on to the roof vent till the whole lip is in

Product description

The Broan-NuTone RVK1A Steel Roof Cap Kit is an easy-to-install vent for ventilation fans (bath, rec room, home gym, etc. ). It is compatible with 3" or 4" ductwork and includes a 3" to 4" adapter for convenience. This cap features both a back draft damper and bird screen, preventing outside air from entering the home and birds and small pests from entering duct work. This kit includes all materials needed for installation, including 8 ft. of 4" flexible ducting, 4" metal duct connector, 4" to 3" Reducer, nylon zip ties and mounting screws. The flexible ducting conforms to UL 181 Class 1 Air Connector and CUL S110 requirements. Not suitable for dryer venting or flat roofs.

• Includes 8 feet of 4", flexible, 2-ply metallic laminateducting, 4" diameter metal duct connector, 2 ductclamps, 4" to 3" reducer and Model 636 Roof Cap
• Duct conforms to UL181 Class 1 air connector requirements

User questions & answers

Question:	Can I purchase only the metal duct connector
Answer:	Sorry, I misread your question a few minutes ago. It is the connector, not the tubing you are asking about. I still do not know of any single-item availability from the kit, although you might have luck contacting Broan and asking. If you mean the clamp, search for a 4 inch clamp from hose clamp sellers. They should be readily available in the HVAC world, and used with clothes dryers. If you mean the actual 4 inch diameter sheet metal extension under the hood that the hose connects to, your best bet is probably to take it to a sheet metal shop and have them install one. You may, also, rig one up by attaching a piece of 4 inch cylinder using L-brackets and screws to hold the cylinder in place. Be sure to seal the interface with a long-lasting sealant, such as silicone caulking.
Question:	Has anyone had issues with snow piling up too high and blocking the vent? it seems to have a low profile. i live in new england with low pitched roof
Answer:	If you use it regularly the warm house air will melt any snow. The flap is protected by the top so even if covered the warm air would escape and melt the snow.
Question:	Has anyone experienced problems with this vent leaking in heavy rain? Big box retailer reviews report that
Answer:	We bought 2 of these exact kits from a big box retailer and after 2 years both have rusted near the base and one of them started leaking in a recent heavy rain storm. Looking to replace both of mine with galvanized vents.
Question:	Is this cap made of aluminum or galvanized steel
Answer:	It is not aluminum. I put a magnet on it and It did stick so it could be steel. It is painted so I don't know if it is galvanized.

Product description

Upgrade your home with Broan-NuTone's Attic Ventilator! This ventilator keeps your attic cool and dry all day long at a maximum 1600 CFM for up to 2285 sq. ft. The 14” diameter steel blade fan is pitched for maximum air flow and minimum sound level with the brown PVC plastic dome providing ultraviolet protection and superior durability. The 23-gage metal flashing allows for nailing and hot tar application. The attic ventilator operates automatically and includes a built-in adjustable thermostat with a thermally protected lubricated motor. This certified unit also includes a built-in screen to keep out insects, animals or birds without impeding airflow. Transform your home today with Broan-NuTone's Attic Ventilator!

From the Manufacturer

Since 1932, Broan-NuTone LLC has led the industry with forward-thinking residential ventilation products, unsurpassed built-in convenience products and superior customer service. While global expertise plays a critical role in Broan-NuTone’s ability to being able to meet and exceed the needs and desires of homeowners and designers alike, Broan-NuTone is very proud of the fact that over 80 percent of their products sold in the United States are designed, engineered and manufactured in the United States with U.S. and imported parts. Manufacturing operations in the United States are located in Hartford, Wisconsin and Cleburne, Texas, with customer and technical services located in Hartford and in Cincinnati, Ohio. Broan-NuTone is committed to developing revolutionary products that improve the indoor environment as well as implementing procedures to preserve the outdoor environment. Broan-NuTone offers a wide selection of products that help meet the requirements of all three major green building programs: ENERGY STAR, U.S. Green Building Council’s (USGBC) Leadership in Energy and Environmental Design (LEED) for Homes, and the National Association of Home Builder’s (NAHB) Model Green Home Building Guidelines. Broan-NuTone’s inspiring heritage provides the foundation for its three award-winning, global brands – Broan, NuTone and BEST. Broan is the industry leader of range hoods, ventilation fans, heater/fan/light combination units, Indoor Air Quality (IAQ) Fresh Air Systems, built-in heaters, whole-house fans, solar powered attic ventilators and trash compactors. NuTone holds major market positions in door chimes, central vacuum systems, stereo intercom systems, home theater speakers, medicine cabinets, ironing centers, ceiling fans and ventilation fans. BEST range hoods are the “Ultimate in Kitchen Ventilation” featuring state-of-the-art performance and Italian design.

• HIGH-QUALITY VENTILATOR: Attic ventilator works to remove super-heated attic air in spaces up to 2285 sq. ft. at 1600 CFM
• DURABLE: PVC plastic dome with a brown finish provides ultraviolet protection and superior durability
• EFFICIENT: 14" diameter steel blade is specially designed for maximum air movement
• DURABLE: Thermally protected, permanently lubricated motor is built to last
• EASY TO USE: Unit operates automatically with an adjustable, built-in thermostat for your convenience

User questions & answers

Question:	Why is my fan so noisy
Answer:	120 VOLTS - 8 AMPS
Question:	Is the included thermostat switch at the fan unit or something that can be installed remoted, for adjustments without climbing on a ladder to change
Answer:	960 watts, 1 year limited warranty, roof hole size is 14-3/8" diameter.
Question:	What is the temperature range for the unit, aka what is the lowest temp at which the fan can turn on
Answer:	I think you have one of two choices. Live with it, or install a smaller CFM unit. Personally, I'd learn to live with the noise. You could always add more insulation to the attic...
Question:	Temperature control included
Answer:	The 356BK is not designed to be used with a speed control. By using a speed control the motor will get very hot and will probably burn out prematurely.

Product features

Improving Lives with Improved Air.

Headquartered in Hartford, Wisconsin, Broan manufactures forward-thinking residential ventilation products, customized climate, communications and home automation solutions.

Broan offers a broad line of kitchen and bathroom ventilation products, providing choices, style, value, and a name that can be trusted.

Product description

Upgrade your home with Broan-NuTone's Solar-Powered Attic Ventilator! This ventilator features a 28-watt solar panel that captures sunlight to efficiently convert it into electric power, keeping your attic cool and dry all day long at a maximum 537 CFM. The 12” diameter, one-piece aluminum 5-blade fan is pitched for maximum air flow to keep your living area cooler, extend the life of your air conditioner and save energy and money. The low-profile, integrated design creates an attractive, unobtrusive addition to your roof without the need for props or pivoting stands. The housing, constructed of UV-stabilized ABS plastic, and rugged, tempered glass solar panel withstands large hail and won't delaminate or fade over time due to weather. Installation is quick and easy with the compact base footprint allowing for fewer shingles to be cut and housing frame including positive stops to "seat" the dome. This unit includes stainless steel fasteners and galvanized steel brackets for durability and corrosion resistance, and aluminum, heavy-gauge screen to keep out insects, animals or birds without impeding airflow. Optional thermostat is easy to install and disables the motor when the temperature dips below 50-degrees, to extend motor life; recommended for climates where cold weather condensation isn’t a concern. Save energy with Broan-NuTone's Solar-Powered Attic Ventilator. Because our solar cells are highly efficient at capturing the sun’s energy, there is no need for unsightly raised panels or tracking systems.

• SOLAR-POWERED VENTILATOR: 28-Watt solar-powered attic ventilator converts sunlight into electric power, providing a maximum 537 CFM year-round
• DURABLE: Housing constructed of UV-stabilized, color-dyed, rugged ABS plastic and rugged, tempered glass solar panel are built to withstand large hail and resist deteriorating over time
• DURABLE: Housing constructed of UV-stabilized, color-dyed, rugged ABS plastic and rugged, tempered glass solar panel are built to withstand large hail and resist deteriorating over time
• EASY INSTALLATION: Compact base footprint and housing frame with positive stops to "seat" the dome allow for a fast and easy installation - Recommended for use with a shingle roof only
• ATTRACTIVE: Low profile, integrated design for an attractive, unobtrusive addition to your roof without the need for props or pivoting stands used by some manufacturers

User questions & answers

Question:	so without the thermostat, does this fan run all the time while it is light out
Answer:	Yes, it runs continuously when it receives light. You may purchase a Broan thermoswitch which will shut it off if the temp is less than 50 deg F (which means it'll basicaly run all the time). I purchased the thermoswitch for the Natural Light brand because it turns on at 80 and off at 70 (added benefit: it's cheaper). For my climate in Los Angeles, that range is preferable (I would think the same in other climates, too). To install, just clip off the black male spade connector of the Broan and replace it with a female and reconnect with the switch in series. The wiring that comes with the switch is not used. It's easy and it works!
Question:	Can this fan sustain hurricane winds
Answer:	Our unit is located on the Ocean and we have had storms but no hurricanes since it was installed.
Question:	Can this be installed on a Terracotta tiled roof
Answer:	Only if the tiles are relatively flat. Broan's website indicates the fan is designed for a "shingled" roof. Not much clearance between the base and the fan housing, but it woks great.
Question:	Will these keep the dampness out of a shed? Shed is only 140 square feet
Answer:	This fan is designed for spaces of 3200 cubic feet. We would not recommend using this fan in a small space. Please contact our Technical Support Department at 800-637-1453 for assistance in determining the best fan for your needs.

Product features

BROAN 345SOBK Surface Mount Solar Powered Attic Ventilator, 28-Watt

BROAN Solar Powered Attic Ventilators use energy from the sun to operate, and require no additional electricity.

The BROAN 345SO Attic Ventilator features a 28-watt solar panel that captures sunlight from dawn to dusk and efficiently converts it into electric power to keep attics cool and dry all day long. It provides 537-maximum-CFM and year round protection for the structure of a home.

The housing features a molded design of UV-stabilized, color-dyed, rugged ABS plastic that withstands hail and resists fading to remain attractive for years; it may also be painted to match roof color.

Low Profile:

Compact base footprint means fewer shingles to cut for easier, faster installation.

Low profile, integrated design for an attractive, unobtrusive addition to any roof without the need for props or pivoting stands.

Pest & Weather Resistant:

Aluminum, heavy-gauge screen keeps out insects, animals or birds without impeding airflow.

Rugged, tempered glass solar panel withstands large hail and won’t delaminate.

Built to Last:

Housing frame features positive stops to 'seat' the dome for fast, easy installation.

Includes stainless steel fasteners and galvanized steel brackets for durability and corrosion resistance.

Efficient:

12-Inch diameter, one-piece aluminum 5-blade fan is pitched for maximum airflow.

Direct-current motor is dynamically balanced for superior performance and silent operation.

Product description

Upgrade your home with Broan-NuTone's Solar-Powered Attic Ventilator! This ventilator features a 28-watt solar panel that captures sunlight to efficiently convert it into electric power, keeping your attic cool and dry all day long at a maximum 537 CFM. The 12” diameter, one-piece aluminum 5-blade fan is pitched for maximum air flow to keep your living area cooler, extend the life of your air conditioner and save energy and money. The low-profile, integrated design creates an attractive, unobtrusive addition to your roof without the need for props or pivoting stands. The housing, constructed of UV-stabilized ABS plastic, and rugged, tempered glass solar panel withstands large hail and won't delaminate or fade over time due to weather. Installation is quick and easy with the compact base footprint allowing for fewer shingles to be cut and housing frame including positive stops to "seat" the dome. This unit includes stainless steel fasteners and galvanized steel brackets for durability and corrosion resistance, and aluminum, heavy-gauge screen to keep out insects, animals or birds without impeding airflow. Optional thermostat is easy to install and disables the motor when the temperature dips below 50-degrees, to extend motor life; recommended for climates where cold weather condensation isn’t a concern. Save energy with Broan-NuTone's Solar-Powered Attic Ventilator! Rugged, tempered glass solar panel withstands large hail and won’t delaminate so you can be confident in its reliability, functionality and attractive appearance

• SOLAR-POWERED VENTILATOR: 28-Watt solar-powered attic ventilator converts sunlight into electric power, providing a maximum 537 CFM year-round
• DURABLE: Housing constructed of UV-stabilized, color-dyed, rugged ABS plastic and rugged, tempered glass solar panel are built to withstand large hail and resist deteriorating over time
• ENERGY SAVER: The 12” diameter, one-piece aluminum 5-blade fan is pitched to allow for maximum air flow, keeping your living area cooler, extend the life of your air conditioner and save energy and money
• EASY INSTALLATION: Compact base footprint and housing frame with positive stops to "seat" the dome allow for a fast and easy installation
• ATTRACTIVE: Low profile, integrated design for an attractive, unobtrusive addition to your roof without the need for props or pivoting stands used by some manufacturers

User questions & answers

Question:	Is it thermostatically controlled
Answer:	If you mean is it easy to see the positive & negative wires going directly into the fan, cut & splice your own switch in, bypassing thermostat.... yes it is easy to do.
Question:	is the fan on the roof line or deeper
Answer:	I think sealed, I don't remember any zerk fittings or oil holes to use. Mine has been in my house two years and there are no problems. I by passed the thermocouple and have it on a switch. I put one in my daughters house and used the thermocouple because she and her husband are gone quite a bit and not at home to turn it on. No issues after 18 months. Quiet because I used rubber padding between the fan and board it is connected to. It keep our upstairs a lot cooler. No issues with bearings yet, and I don't really expect any.
Question:	Can this be install to an indoor patio? I have a room where the ceiling is essentially a shingled roof with no insulation or space inbetween
Answer:	The thermostat is inside the fan--look at the picture, it is the little box in the lower left corner where the electrical wire is running into the fan. You can take the thermostat out as it is only attached with a couple of screws. Mounting it a few feet away from the fan is easily doable.
Question:	I just installed this attic fan in my Florida which is in path of hurricane Irma. What should I expect
Answer:	The fan is fairly quiet inside the house compared to others I have installed, however outside at the gable vent you can hear it very well, this fans moves a lot of air,

Product features

BROAN 345SOBK Surface Mount Solar Powered Attic Ventilator, 28-Watt

BROAN Solar Powered Attic Ventilators use energy from the sun to operate, and require no additional electricity.

The BROAN 345SO Attic Ventilator features a 28-watt solar panel that captures sunlight from dawn to dusk and efficiently converts it into electric power to keep attics cool and dry all day long. It provides 537-maximum-CFM and year round protection for the structure of a home.

The housing features a molded design of UV-stabilized, color-dyed, rugged ABS plastic that withstands hail and resists fading to remain attractive for years; it may also be painted to match roof color.

Low Profile:

Compact base footprint means fewer shingles to cut for easier, faster installation.

Low profile, integrated design for an attractive, unobtrusive addition to any roof without the need for props or pivoting stands.

Pest & Weather Resistant:

Aluminum, heavy-gauge screen keeps out insects, animals or birds without impeding airflow.

Rugged, tempered glass solar panel withstands large hail and won’t delaminate.

Built to Last:

Housing frame features positive stops to 'seat' the dome for fast, easy installation.

Includes stainless steel fasteners and galvanized steel brackets for durability and corrosion resistance.

Efficient:

12-Inch diameter, one-piece aluminum 5-blade fan is pitched for maximum airflow.

Direct-current motor is dynamically balanced for superior performance and silent operation.

Product description

Upgrade your home ventilation with Broan-NuTone's Roof Cap! This roof cap maximizes the air and sound performance of your Broan-NuTone ventilation fan or range hood. This durable cap has a natural aluminum finish for durability and long life that stands up to the elements. It is designed to fit with a 3" or 4" round duct for flexible installation. It also includes a built-in, backdraft damper and bird screen provide a dependable roof cap you can rely on. Measuring 12" x 10" x 6", this roof cap is the perfect size for your home. Simplify your life with the Broan-NuTone Roof Cap! Broan-NuTone leads the industry with forward-thinking residential ventilation products, customized climate, communications and home automation solutions along with award winning customer service. Broan’s inspiring heritage provides the foundation for its three global brands – Broan, NuTone and BEST.

• HIGH-QUALITY ROOF CAP: Roof cap for use with range hoods and bath ventilation fans maximizes the air and sound performance of your fan or range hood
• DURABLE FINISH: Natural aluminum finish for durability and long life that stands up to the elements
• RELIABLE: Includes a built-in, backdraft damper and bird screen provide a dependable roof cap you can rely on
• EASY INSTALLATION: Roof cap is designed to fit with a 3" or 4" round duct to provide a simple, flexible installation
• IDEAL SIZE: Measures 12" x 10" x 6", making it the perfect size for your home

User questions & answers

Question:	Is this vent approved for Florida code. And is okay to use on flat concrete tile Roof. Tiles are 1 1/8 thick
Answer:	Model #DR-85HFA has a 24-3/4” square base and will fit on a 24” x 24l roof curb.
Question:	Se puede usar para sacar el humo de una cocina ? Oven range
Answer:	The motor is an open drip proof motor, and not a total enclosed motor. We have a one year warranty on the fan and motor.
Question:	Can I install this on a shake roof or is it intended only for use with tar shingles
Answer:	We strongly recommend an upblast exhaust fan rather than a downblast exhaust fan for a grease rated food truck application. The smallest upblast fan we offer is fan model # DU12HFA which has a 19" x 19" fan base. This can be found if you search ASIN # B07MQ35BYN on Amazon.
Question:	For this roof cap, do you need to buy a collar separately to add a 4" (or 3") duct to it, or is there a collar on the bottom
Answer:	No, It can't. The fan is powered by solar energy and fully automatic operation, Zero electricity consumption.

Product description

Maximize the air and sound performance of your Broan ventilation fan or range hood using one of our wide variety of ducting accessories. Footprint is 18-3/4" long x 14-1/4" wide for a well-balanced fit Designed to fit with 3-1/4" x 10" or up to 8" round duct for flexible installation A built-in, backdraft damper and bird screen provide a dependable roof cap you can count on Roof cap is made of 24 gauge CRCQ steel construction in a .025 natural Aluminum finish for durability and long life For use with Range Hoods, LoSone Fans and Bath Ventilation Fans.

• Footprint is 18-3/4" long x 14-1/4" wide for a well-balanced fit
• Designed to fit with 3-1/4" x 10" or up to 8" round duct for flexible installation
• A built-in, backdraft damper and bird screen provide a dependable roof cap you can count o
• Roof cap is made of 24 gauge CRCQ steel construction in a .025 natural Aluminum finish for durability and long life
• For use with Range Hoods, LoSone Fans and Bath Ventilation Fans

User questions & answers

Question:	Do any of the vents have a built in flapper to keep wind from entering
Answer:	This cover fits over my 14"x 14" bathroom vent. I believe the vent is a standard size. I have two other vents this size (14"x14") in my 5th wheel trailer. I can crank the vent in our bathroom about 3/4 of the way open. The vent opens and closes normally in all respects. The Camco vent cover comes with stainless steel brackets and screws to attach it to the vent. It is fairly easy to install. Dave
Question:	Do any of the vents have a built in flapper to keep wind from entering
Answer:	yes, it comes with brackets and screws. You will need a drill to mount the brackets to the aluminum frame of the vent, hand tighten everything, then snug them down with small wrench, screwdriver.
Question:	Is the finish painted black (as shown in picture) or is it natural aluminum finish? I suspect this is aluminum with no paint
Answer:	Only if hail is less than 4 inches in diameter. What I did is put aluminum sheet metal on top of it. It works great but it makes a lot of noise when it hails or even rains. I should have used 1/4 inch sheet metal instead of aluminum
Question:	how is a 6" round duct connected at bottom
Answer:	I ordered one to first check the fit of my three vents. The two fantastic vents would not fit but the bathroom stock fan vent did so that's where its installed. Works great no problems after two years.