Broan-NuTone 636 Steel Roof Vent Cap for 3" and 4" Round Duct, For Bathroom Ventilation Fans, Black

Broan-NuTone 636 Steel Roof Vent Cap for 3" and 4" Round Duct, For Bathroom Ventilation Fans, Black

Q: What is the function of a roof vent cap? Does it keep rain water out of house, or just keep animals out?

It does both keeps rain and animals and bugs out. You have to buy the vent collar separately though. So you can connect your exhaust hose or dryer hose to it because some vents on the roof are just for ventilation in your attic space. Them vents you can’t hook your exhaust too. Proper ventilation is key to saving money in your house. I’m going threw the same problem at the time. Make sure you never just vent your fan to your attic space that’s a no no. Also if your fan is anywhere by water make sure your fan is wired inline with a GFCI it’s just the way to do it. Hope this helps you out

Q: 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.

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.

Q: Can the damper get frozen shut in the winter?

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.

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Product ID: 256682427

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Details

Colour
Black
Material
Alloy Steel
Brand
Broan-NuTone
Fit type
Universal Fit
Vehicle service type
Passenger Car

🦅Integrated birdscreen & damper

🌬️Fits 3" & 4" round ducts

🛠️Durable alloy steel build

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Broan-NuTone DC4 Roof Vent Cap Duct Collar, No Size, No Color

Description

🏠 Elevate your ventilation game with stealthy strength!

BUILT TO LAST - Premium alloy steel ensures long-lasting durability and weather resistance.
MADE IN THE USA - Crafted domestically for trusted quality and reliability.
SLEEK STEALTHY - Matte black finish blends seamlessly with modern roofing aesthetics.
STAY FRESH PROTECTED - Includes a damper to prevent backdrafts and a birdscreen to keep pests out.
PERFECT FIT FLEXIBILITY - Compatible with both 3-inch and 4-inch round ducts for versatile installation.

The Broan-NuTone 636 Steel Roof Vent Cap is a robust, black alloy steel accessory designed for bathroom ventilation systems. Compatible with 3" and 4" round ducts, it features an integrated damper and birdscreen to optimize airflow while preventing pests and backdrafts. Manufactured in the USA, it combines durability with sleek design for professional-grade ventilation solutions.

Specifications

Manufacturer	Broan-NuTone
Part number	636
Item Weight	726 g
Item model number	636
Size	No Size
Color	Black
Finish	Black
Material	Alloy Steel
Shape	Round
Power source type	AC
Item Package Quantity	1
Number Of Pieces	1
Cutting Diameter	3 Inches
Included components	Roof Cap, damper, birdscreen
Batteries Included?	No
Batteries Required?	No
Item diameter	3 Inches

Have a Question? See What Others Asked

What is the function of a roof vent cap? Does it keep rain water out of house, or just keep animals out?

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.

Can the damper get frozen shut in the winter?

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?

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