Opposed Blade Volume Damper 3000-0BD-64X58 Residential Registers & Grilles Standard Features * Modular core

Standard Features * Modular core ceiling diffuser * Modular core has galvaneal steel blades in

904 - Double Deflection Adjustable Aluminum Blade Grille For a 14" x 12" Duct Opening (front blades parallel to shortest dimension)

Heavy gauge cold roll steel

SD34 - Transition Box Spiral Pipe Grille (DOUBle Deflection)

Opposed Blade Volume Damper 3000-0BD-64X58 Residential Registers & Grilles Standard Features * Modular coreh3. 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.