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Ships within 48 hours · Estimated delivery Aug 11 - Aug 16
inner dimension and outside dimension sizes available * Tamper proof screws * Standard Color
904 - Double Deflection Adjustable Aluminum Blade Grille For a 34" x 18" Duct Opening (front blades parallel to shortest dimension)
Stamped steel face with roll formed frame
Options * Sleeve variations h3
Filter retention tabs
Opposed Blade Volume Damper 3000-0BD-28X28 Step Down Ceiling Diffuser inner dimension and outside dimensionh3. 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.
