Parallel Volume Damper Low Leak 3000PLL-70X26 T-Bar PERFORMANCE DATA 907 Series Engineering/Performance

PERFORMANCE DATA 907 Series Engineering/Performance Data

* 2550 - Round Spring actuated (6) damper for vertical or horizontal mount

Standard Features *Surface mount return air grille * 45 fixed blades parallel to longest dimension * Countersunk mounting holes for flush appearance with color matching Phillips posi-drive screws * Soft White Options * 935 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

1 1/2 hour fire resistance rating

Retainer cables are provided on sizes 12" and larger to allow the inner cones to hang securely while adjusting the diffuser

Parallel Volume Damper Low Leak 3000PLL-70X26 T-Bar PERFORMANCE DATA 907 Series Engineering/Performanceh3. 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