The DFD35GA and DFD35SSGA is a UL555 classified, 1 1/2 hour rated, multiblade fire damper. The DFD35GA is an "out of the wall or concrete floor" dynamic rated fire damper with through the "grille acess to the fusible link. The damper can be installed in either supply or return applications and can be installed completely from one-side of the partition (no retaining angles are required on the "back-side").
It features:
- UL approval for dual directional air flow.
- Maximum velocity of 3,000 fpm.
- Maximum 4" static pressure.
- DFD35GA - Galvanized steel construction.
- DFD35SSAGA - Stainless steel construction.
- Triple vee groove blade.