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Ships within 48 hours · Estimated delivery Aug 17 - Aug 22
Extruded aluminum frame with steel roll formed blades and steel multi-shutter damper
Available 4" thru 40" round
904 - Double Deflection Adjustable Aluminum Blade Grille For a 34" x 18" Duct Opening (front blades parallel to shortest dimension)
are enclosed in the valve to assure trouble free operation * Countersunk mounting holes for flush appearance with color matching Phillips posi-drive screws * Steel multi-shutter damper * Soft White Options * 845 O - steel lever operated opposed blade damper * Tamper proof screws * Standard Color
4-Way ceiling register with stiffened 1/2" fan shaped louvers for silent operation
Parallel Volume Damper Low Leak 3000PLL-50X46 Smoke-Fire Damper Extruded aluminum frame with steelh3. Standard Features * 16 gauge galvanized channel frame * Parallel blades are cee 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. Options * 3000 PLL Low Leak Air Control
