Volume Damper Low-Leak OBD 3000-0BDLL-68X14 Smoke-Fire Damper enclosed in valve to assure

enclosed in valve to assure trouble-free operation

904 - Double Deflection Adjustable Aluminum Blade Grille For a 48" x 30" Duct Opening (front blades parallel to shortest dimension)

Low profile design for tight mechanical areas

Double deflection radius mount spiral pipe grille with adjustable blades

Locking screw to hold damper in place

Volume Damper Low-Leak OBD 3000-0BDLL-68X14 Smoke-Fire Damper enclosed in valve to assureh3. 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.