Parallel Blade Volume Damper 3000P-70X46 Smoke-Fire Damper CB40 - four way *

CB40 - four way * Countersunk mounting holes for flush appearance with color matching Phillips posi-drive screws * Soft White Options * CB40 O - recessed screwdriver operated opposed blade damper * Square to round No Labor Collar (square sizes only) * 700 CB and CB T - T-Bar mount * SCB - steel version * Tamper proof screws * Standard Color

Maximum single section size 24"x24"

1x2 T-Bar (10" x 22" duct)

w/ Tool Operated Opposed Blade Damper

SD34 - Transition Box Spiral Pipe Grille (DOUBle Deflection)

Parallel Blade Volume Damper 3000P-70X46 Smoke-Fire Damper CB40 - four way *h3. 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