The Biplane Louver out performs any double louver damper for:
Advantages over a double louver design:
The Blade Construction of Forney’s BiPlane Damper – utilizes a bridge structure design and reduces pressure drop
Blade to frame seat is not effected by dust or deposits in the duct.
In some applications where guillotine dampers are normally open, replacing the guillotine with a BiPlane Louver can eliminate the need to continuously run a seal air fan. These power consumption savings will pay for the entire cost of the Biplane double louver.