ReviewsBackdraft Damper

Broan-NuTone 644 Roof Cap, 3-1/4\ x 10\

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.

Highest Rated Premium Airflow Control Backdraft Dampers.
Spring-loaded butterfly aluminum damper blades encased in a 20-guage galvanized steel housing.
May be installed in any position or orientation to prevent backflow and designed for use in AC, Heating, Vent and other HVAC application temperatures....
Extremely easy and secure inline duct insertion installation. Available in 4", 5", 6", 7", 8", 10", 12", 14" and 16"..
Minimal pressure to open. 0.04 to 0.08 in. w.g. Maximum automatic back flow protection.

duct and the rubber flap will seal off drafts coming in from your dryer vent or bathroom exhaust fan. Make sure the flaps open away from the ventilator. The outer rubber ring creates a seal around the strong plastic body giving you the perfect vent damper..
FLEXIBLE This backdraft damper's main recycled plastic part is small enough to fit into almost all PVC, metal, and other ducts with 4 inch size. No need to buy multiple products to find the one that works. Purchase with ease and relax in your draft free living space..
CONVENIENT This 4 inline damper duct valve gummi flaps are easy to open for almost all dryers or booster fans. The lack of moving spring will ensure a long lifespan that will save you time and money. As the product is made out of weather-resistant plastic, you can install the dryer damper in high-humidity environments..
WELL MADE It works in any orientation even 45 degrees or 15 for that matter. The rubber seal is quieter than all metal or plastic models. This will ensure you will not be disturbed by constant annoying rattling from cheaper models..

Highest Rated Premium Airflow Control Backdraft Dampers - Used Specifically for 5" Duct Size Applications.
Spring-loaded butterfly aluminum damper blades encased in a 20-guage galvanized steel housing.
May be installed in any position or orientation to prevent backflow and designed for use in AC, Heating, Vent and other HVAC application temperatures....
Extremely easy and secure inline duct insertion installation. Available in 4", 5", 6", 7", 8", 10", 12", 14" and 16"..
Minimal pressure to open. 0.04 to 0.08 in. w.g. Maximum automatic back flow protection.

Footprint is 18-3/4″ long x 14-1/4″ wide for a well-balanced fit.
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 with a black electrically-bonded epoxy finish for durability and long life.
For use with Range Hoods, LoSone Fans and Bath Ventilation Fans.

Overall size showing on the surface is 9″ square with a 5-1/2″ hood and a 1-1/4″ long attachment collar for 6″ round ductwork (NOT for use with dryer venting).
Equipped with a spring-loaded backdraft damper and bird screen to keep nests and small animals on the outside.
Wall cap is made of 22 gauge CRCQ steel construction with a .025 natural aluminum finish for durability and long life.

Footprint is 18-3/4-inch long x 14-1/4-inch wide for a well-balanced fit.
Designed to fit with 3-1/4-inch x 10-inch or up to 8-inch 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 with a black electrically-bonded epoxy finish for durability and long life.
For use with range hoods, loosen fans and bath ventilation fans.

Highest Rated Premium Airflow Control Backdraft Dampers.
Spring-loaded butterfly aluminum damper blades encased in a 20-guage galvanized steel housing.
May be installed in any position or orientation to prevent backflow and designed for use in AC, Heating, Vent and other HVAC application temperatures....
Extremely easy and secure inline duct insertion installation. Available in 4", 5", 6", 7", 8", 10", 12", 14" and 16"..
Minimal pressure to open. 0.04 to 0.08 in. w.g. Maximum automatic back flow protection.

Overall sizing is 12-3/4″ wide x 5-5/8″ high. Duct fitting protrudes 4-7/8″ from back of cap to allow proper fit to the ductwork (NOT for use with dryer venting).
Equipped with a spring-loaded backdraft damper and bird screen to keep nests and small animals on the outside.
Wall cap is made of 24 gauge CRCQ steel construction with a black electrically-bonded epoxy finish for durability and long life.

MADE IN THE USA: Our hooded copper wall vent covers for home are constructed using quality, heavy duty 16 ounce, 24 gauge copper, with the most extreme conditions in mind. The FAMCO hooded wall vent includes a built-in hinged backdraft damper..
ADAPTIVE DRYER VENT: The FAMCO DWV Wall Vent is primarily used for dryer venting and air exhaust applications that require no screen. The angled hood is designed to balance a low profile with optimum air and exhaust flow..
SELECtION: Our vent covers for home is available in sizes ranging from 3” to 14 inches. NOTE THE SIZE REFERS TO THE DIAMETER OF THE PIPE. Our low profile vent covers are also available in Aluminum, Galvanized Steel or Galvanized painted steel in black, brown, or white..
INSTALL: Our air vents are made from durable materials making it easier to install and compatible with most home improvement projects. Please note this dryer vent has NO SCREEN. Please see our SDWV Wall Vents for a vent with a screen and damper..
SATISFACTION: FAMCO prides itself on Quality Built Products manufactured from quality raw materials. All....

Stainless-steel-sheathed heating element features Nichrome wire with magnesium oxide for optimal heat transfer and electrical insulation at elevated temperatures.
WhisperWarm fans feature a totally enclosed condenser motor and a large, double suction blower wheel to quietly move air.
This fan is designed to give you continuous, trouble-free operation for many years thanks in part to its high-quality components and permanently lubricated motors which wear at a slower pace.
Built-in damper to prevent backdraft, which helps to prevent outside air from coming through the fan.