Parallel Volume Damper Low Leak 3000PLL-44X34 Specialty Products 1/2" spacing dual angular louvers

1/2" spacing dual angular louvers for strength and maximum free area

055 T6 aluminum surface mount return air grille * 45 fixed blades parallel to shortest dimension * Countersunk mounting holes for flush appearance with color matching Phillips posi-drive screws * Soft White Options * 906 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 * Fractional

Square or rectangular ceiling radiation butterfly damper

Nylon bushings for easy adjustment and quiet setting of blades running parallel to shortest dimension

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Parallel Volume Damper Low Leak 3000PLL-44X34 Specialty Products 1/2" spacing dual angular louversh3. 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