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Internet #202905918

Model #634M

Roof Cap with Built-In Damper for 6 in. Round Duct in Black

  • Broan-NuTone built-in back-draft damper eliminates cold air entry
  • Built-in bird screen for added protection
  • Easy to install and/or replace existing product for DIY'ers
  • See More Details

Frequently Bought Together

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Product Overview

The attractive Broan 634M roof cap is the perfect finish for your ventilation system. The built-in back-draft damper eliminates cold air from entering the home. The bird screen stops unwanted visitors from gaining entry.

Info & Guides

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Specifications

Dimensions

Product Depth (in.)
18.75
Product Height (in.)
6.625
Product Width (in.)
14.25

Details

Air Treatment Product Type
Air Purifier Accessory
Appliance Category
Appliance Parts
Color Family
Blacks
Pack Size
1
Part Type
Cap/Cover
Product Weight (lb.)
5.67 lb
Returnable
90-Day

Warranty / Certifications

Manufacturer Warranty
None

Questions & Answers

10Questions46Answers

The installation instructions state: "This roof cap includes a 6" diameter collar that accepts 6"...

Asked by Dan September 16, 2020
2
Answers

Yes. Rigid duct can be used. If you have further technical or installation questions, please contact our Broan-NuTone Technical Support Department at 1-888-336-6151 between 8:30 AM and 7:00 PM (EST) Monday-Friday.

Is it recommended, or would it be helpful, to apply silicone or tar sealant to the edges where th...

Asked by Dan June 28, 2020
3
Answers

You may want to review the installation instructions that are provided on the Home Depot site. The 634 can be secured using roofing cement to seal top and sides of roof cap. Seal all nail heads with roof cement as well. If you have additional questions, please contact our Broan-NuTone Technical Support Department at 1-800-637-1453 between 7:30 AM and 6:00 PM (CST) Monday-Friday.

Although this a roof cap, can it be used as a wall cap? I like the low-profile look compared to t...

Asked by AllWashedUp December 30, 2019
1
Answer

No. This is designed for a roof. The door flap may not close properly. If you have a unit that is exhausting though a wall, we recommend using the wall caps. If you have further technical or installation questions, please contact our NuTone Technical Support Department at 1-888-336-6151 between 8:30 AM and 7:00 PM (EST) Monday-Friday.

When rain hits on this roof cap the noise is so loud you can not stay in the kitchen. Is this normal?

Asked by Brad June 8, 2019
3
Answers

The roof cap can make noise. That is normal, however, you may want to reach out to our Broan Technical Support Department at 800-637-1453. They are available M-F, 8:00am - 6:00pm CST.

I am venting my furnace closet to the roof and I would like to know if this vent would work prope...

Asked by Ziggy9 April 6, 2019
2
Answers

This roof cap is for exhaust ventilation only. The damper will prevent air from entering the home and only open when air exiting the home forces it open (like a vent fan). You will have to find a different solution for bringing air into the home. Thank you for considering our products for this project. You may also consider checking into local building codes to be sure you are compliant.

In cold climates if I used this roof cap for range hood, Will the damper freeze open (or closed) ...

Asked by mike March 14, 2019
5
Answers

The damper is just a thin piece of sheet metal attached with a hinge - lifts up to open when air pressure comes up from fan. If enough moisture can settle inside the hood then it would be possible that it might freeze closed but not likely to freeze in the open position. If your roof pitch is great enough to keep most moisture out of the hood then you should be alright.

Does Model634M handle 760 CFM Fromm range hood?

Asked by Phoebe January 21, 2019
5
Answers

my range hood 750 cfm , all the smoke blow out of the roof top

My contractor mentioned needing a rubber boot where this would come through the roof. However, th...

Asked by DIYguy January 13, 2018
10
Answers

I've got one installed on an asphalt roof. Maybe he is talking about a metal roof??? I never heard of the rubber boot thing. I don't remember Brown's instructions mentioning this. It is installed just like your typical roof vent. You put roof tar around the flat metal part that comes in contact with your roof and you push the top of the flat metal piece under your shingles and nail it in. I haven't had any problems. Mine came with pretty good directions, just follow them. If you live in an area where it gets cold in the winter, you should use 6 inch duct insulation along the entire run of you 6 inch duct, from inside of roof to the ceiling where it enters you kitchen. If you don't condensation will run down the duct work and water will drip all over your ceiling and eventually damage the drywall.

Can this roof cap be used for exhausting a range hood?

Asked by Nino April 29, 2016
10
Answers

Bought mine 2 yrs ago. Works great, easy install.

Does the Broan 634M Roof Cap have a 6" stem that protrudes into the attic (for direct attachment of a 6" bath exhaust fan duct)?

Asked by Paul April 11, 2014
5
Answers

It mated to standard 6" round ducting well but the stem from the cap protruded about 1.5" therefrom the cap. So to make the connection easier, I initially attached a short (@ 3") straight length of 6" round ducting to the stem to enable easier access to connect it to flexible or rigid ducting in my crawl space attic. Shouldn't make the short extension longer cause it may prevent installation into roof hole.

Roof Cap with Built-In Damper for 6 in. Round Duct in Black - page 2

Customer Reviews

  • 4.3
    out of 42 reviews
  • 83% recommend this product
Filter by:
Showing 1-10 of 42 reviews
This item is well made. The material was a heavier...
This item is well made. The material was a heavier grade than a similar unit at a similar price in the store.
by HomeDepotCustomer
Good product. Easy to install. I did add a...
Good product. Easy to install. I did add a finer screen to it though to keep out wasps.
by Matt
As expected, although I also painted before installing...
As expected, although I also painted before installing
by THOMAS
The product was pretty easy to install and solidly built.
The product was pretty easy to install and solidly built.
by Jet
good...
good
by BENJAMIN
Decent quality but made some 'improvements' to make it near...
Decent quality but made some 'improvements' to make it near perfect. I sprayed rubberized undercoat on the inside and lots on the outside to dampen the noise that heavy rain might make. I super glued memory foam on the inside/top so the damper would not clang into the metal during high winds. I replaced the front screen with a wider screen that covered the whole opening and added (2) sheet metal screws to make it more secure and less likely to ever be pulled out by an aggressive bird or squirrel.
by HomeDepotCustomer
1 person found this helpful
The screen would stop birds but not wasps or hornets. I changed the screen to correct this witho...
The screen would stop birds but not wasps or hornets. I changed the screen to correct this without impacting airflow. Also, the metal flap is so flimsy it does not set on the foam seals. Flap will not maintain a flat profile no matter what you do. Some redesign is needed here. It's too bad these short comings exist as the unit is well built otherwise.
by Wishitwasbetter
It was sturdy and easy to install, my only complaint...
It was sturdy and easy to install, my only complaint was the flimsy screen to keep out animals..
by HomeDepotCustomer
Works well
Product works great. Shipping on the other hand has issues. We had to return 2 before we got one we could use.
by BDae
Rating provided by a verified purchaser...
Rating provided by a verified purchaser
by HomeDepotCustomer
Showing 1-10 of 42 reviews