Uxcell 6"-7" Backdraft Damper ABS Flexible Airflow Inline Backflow Duct Adaptor Blue 1 Set

The backdraft damper is used to prevent the backflow of lampblack or exhaust gas through air duct when the ventilation fan is off, it also prevents debris, dust and odor from entering your room. Widely used in dryers, extractors or range hoods, and other HVAC applications. You can install it in your home, kitchen, bathroom, office or living room which needs a ventilation system.

Advantage
1. Made of durable ABS plastic, which has waterproof and high hardness, not easy to scratch, oil resistant, high temperature resistant, moisture-proof and can be used for a long time;
2. When the exhaust starts, the air pressure will push to open the valve for air discharging; after the exhaust stops, the damper valve will automatically close and remain closed all the time;
3.With rear spring and 17-degree bevel design, it helps to open the valve smoothly during the exhaust process;
4. Sponge seals and silicone gasket design has good sealing performance.

Instruction
1. Fix the base to the wall. Insert the steel rope into two plastic clips, then fix the plastic clips to the middle pole of the base, attach the base to the wall(the steel rope should be put on the back of the wall ).In addition, you can fix the base to the wall directly with glue or screws as provided.
2. Install the backdraft damper to the base.
3. Finally install the vent hose(not included) to the damper and seal with aluminum tape.

NOTE: Please confirm the size of the backdraft damper before ordering.