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3/4" round collar
904 - Double Deflection Adjustable Aluminum Blade Grille For a 18" x 12" Duct Opening (front blades parallel to shortest dimension)
Blades parallel to shortest dimension
Standard Features *Surface mount return air grille * 0 fixed blades parallel to longest dimension * Countersunk mounting holes for flush appearance with color matching Phillips posi-drive screws * Soft White Options * 937 O - recessed screwdriver operated opposed blade damper * No Labor Collar (square sizes only) * 900 T - T-Bar mount * 905 HD - reinforced construction * 905 IS - insect screen * 1335-1338 Series - stainless steel version * Tamper proof screws
Standard Features * Heavy guage cold roll steel (same as 350 series) * Ideal for return air in the toe space areas between kitchen cabinets
Parallel Volume Damper Low Leak 3000PLL-56X46 Specialty Products 3/4" round collarh3. 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
US$ 13.00
US$ 30.00
US$ 135.00
US$ 4500.00
