Opposed Blade Volume Damper 3000-0BD-70X28 Step Down Ceiling Diffuser 055 T6 extruded aluminum construction

055 T6 extruded aluminum construction * Fits all Shoemaker commercial products * Controls airflow evenly * Screwdriver operated * Available in even sizes * Mill finish Options * Clips for easy installation * Soft White

Access door with 1-3/8" deep steel roll formed frame

Maximum dimension 60x60

904 - Double Deflection Adjustable Aluminum Blade Grille For a 36" x 10" Duct Opening (front blades parallel to shortest dimension)

Opposed Blade Volume Damper 3000-0BD-70X28 Step Down Ceiling Diffuser 055 T6 extruded aluminum constructionh3. 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.