Opposed Blade Volume Damper 3000-0BD-52X46 past 12 months Perforated face grille

Perforated face grille

Front blades are parallel to the shortest dimension

904 Series Submittal

Standard Features * Return air T-Bar lay-in filter grille * Removable louvered 20 gauge steel face * 20" x 20"x 1" filter (not included) * 7/8" fiberglass back plenum cut holes 6"-16" (collar by others) * Seismic support holes * Soft White

Extruded aluminum fixed bar blades at 45°

Opposed Blade Volume Damper 3000-0BD-52X46 past 12 months Perforated face grilleh3. Standard Features * Opposed blade operation for precise volume control * 16 gauge galvanized channel frame * Blades are vee stiffened 16 gauge galvanized for strength and stability * Blades pivot on non metallic celcon bushings * 1 2" square zinc plated steel pivot pins * 1 2" square zinc plated steel adjustable operating shaft extending up to 4" beyond the air control frame * Single blades on dampers with a height of 12" or less * Mill finish h3.