This roof cap maximizes the air and sound performance of your broan nutone ventilation fan or range hood.
Roof backdraft damper.
They effectively keep cold air outside from infiltrating the house particularly during cold weather.
The backdraft damper is unique in that when air flows out of it gravity is the only source by which the backdraft damper closes and prevents contaminated air to filter back through.
Quality constructed in 28 gauge pre painted galvanized steel in black or brown.
Choose the mounting style and size that will fit your roof exhaust needs when you shop for an isolation damper or backdraft damper from grainger today.
Wd 200 series dampers are electric motorized backdraft dampers that open when energized and spring return close when de energized.
These dampers can be used for horizontal or vertical mount applications.
This large selection offers wall mount and roof mount backdraft dampers.
These dampers can also help ventilate an attic chimney laundry room furnace room or any space that doesn t receive adequate airflow.
And can be installed in either a horizontal or vertical position with minimal leakage.
This sealant strip is installed to keep cold air from coming in and according to a broan customer service rep it also helps to prevent unbearable metal on metal chatter.
The built in back draft damper eliminates cold air from entering the home.
4 inch 5 inch 6 inch 8 inch and 10 inch.
The famco bkp bath fan kitchen exhaust roof vent painted come in sizes.
The footprint measures 18 75 x 14 25 for a well balanced fit.
Cons of backdraft dampers.
The attractive broan 634m roof cap is the perfect finish for your ventilation system.
Broan nutone steel roof cap for 6 inch round duct with backdraft damper and bird screen black write a review questions answers the attractive broan 634m roof cap is the perfect finish for your ventilation system.
The bird screen stops unwanted visitors from gaining entry.
Most roof caps for bath fan exhausts have a light aluminum backdraft damper which rests on a sealant strip which is basically a foam piece of weatherstripping.
It s designed to fit with a 6 round duct for flexible installation.
A backdraft damper is used on heat exchangers exhaust systems solar heating systems.
Round duct roof cap with manufactured steel housing and black electrically bonded epoxy finish.
The primary application is to prevent undesirable reverse airflow when installed with roof or sidewall supply intake fans.
Although a backdraft damper is useful in keeping cold air outside during the winter the damper doesn t allow for control to prevent cold air from escaping during the warmer months.
The vent motor of the damper is a great feature for improving household ventilation.
If cooking odors become unbearable or household air gets stifling simply adjust the.
A backdraft damper or isolation damper from grainger helps to allow airflow in one direction and prevent reverse airflow.
