iPower 4/6 inch Backdraft Shutter Damper Back Draft Blocker One-Way Airflow

Description

iPower Backdraft Shutter Damper Back Draft Blocker, One-Way Airflow Ducting Insert Backflow Preventer
Backdraft Damper
A one-way airflow duct tool designed to prevent exhausted air and odors from sweeping back into ventilation systems
Spring-Loaded Dampers
The valve wings open under the pressure created by the airflow and then automatically close with the spring work. The backflow flap closes automatically at low air volumes
An Internal Foam Strip
Outer rubber gaskets line the backdraft damper to provide grip on your inner duct lining. Allows you to install it in horizontal or vertical orientations
Anti-Draft Seal
Once the butterly blade dampers are closed shut, they block exhausted air and odor from flowing the other way, ensuring full ventilation
Build with Aesthetic Looks
A sleek body that is crafted with galvanized steel.A strong build with aesthetic looks
Wide Applications
Back draught valves can be inserted into ventilation ducts which are flexible or non-flexible. Designed for use with range hoods, bathroom fans, kitchen and other home HVAC applications. Essential for HVAC ventilation
Product description
Size:4inch / 6inch
iPower 4/6 inch Backdraft Shutter Damper Back Draft Blocker, One-Way Airflow Ducting Insert Backflow Preventer with 2 Inline Springs Loaded Folding Blades, for HVAC Extractor Fan Vent, Range Hoods
Features
Lightweight valve wings: The valve wings open under the pressure created by the airflow and then automatically close with the spring work. The backflow flap closes automatically at low air volumes. The Backdraft shutter is installed so that the damper blades open only in the outflowing air direction
Keep away from rattling: It has an internal foam strip and a smooth-running spring to keep the valve wings from rattling. The position of the spring should be horizontal for horizontal installations so that it can open and close optimally
One-way airflow ducting insert: Back-flow valve with 2 spring-loaded wings prevents the reverse airflow movement through the ventilation duct when the ventilation system is turned off
Material: The 4/6 inch Backdraft damper is made out of a Galvanized steel, the flap leaves are made of aluminum, while the Axis and spring are made of stainless steel and can withstand temperatures from 14 to 140 °F
Wide applications: Back draught valves can be inserted into ventilation ducts which are flexible or non-flexible. Designed for use with range hoods, bathroom fans, kitchen and other home HVAC applications. Essential for HVAC ventilation