No BackDraft - Fan Backdraft Control System
The most efficient fan backdraft control system for any air-filtered barn. Ensures total peace of mind and unfailing 24/7 reliability, year after year. The least expensive mid and long-term overall solution. Built to last, contrary to fan socks that are known to be subject to wear and tear, requiring regular costly replacement in the mid and long-term, which also creates recurrent risk of herd contamination.
PREVENTS NON-FILTERED AIR INFILTRATION
Less than 1cfm/ft2 air infiltration (16'' Fan)
MINIMAL AIR FLOW RESTRICTION
Fan is efficient at 99% of its capacity (16'' Fan)
ELIMINATES INSTALLATION OF INSULATED WINTER FAN COVER
Requires no additional fan cover and labor
The ' No BackDraft' system features a simple, robust and ingenious automatic close/open mechanism. It keeps the fan damper opened at the required angle to maximize air flow. When the fan stops, the damper closes airtight with sustained pressure against the rubber seal. This mechanism requires no electricity and works in perfect unison with fan action.
- Quick and easy installation
- CFM/Watt ratio improvement allows for increased fan energy efficiency
- Allows to remove original fan louvers to increase fan efficiency, without reducing the level of protection against contaminated air infiltration
- Fits any fan design and size up to 55'