Parallel Blade Volume Damper 3000P-72X40 T-Bar 055 T6 extruded aluminum frame

055 T6 extruded aluminum frame * 90% free area * Countersunk mounting holes for flush appearance with color matching Phillips posi-drive screws * Soft White Options * 600 O - opposed blade damper * No Labor Collar - Square to round (square sizes only) * 600 T - T-Bar mount * 1/2" x 1/2" x 1" Lattice or 1" x 1" x 1" Lattice * Fractional sizes

Countersunk mounting holes for flush appearance with color matching Phillips Pozidriv screws

1 for each end)

904 - Double Deflection Adjustable Aluminum Blade Grille For a 18" x 4" Duct Opening (front blades parallel to shortest dimension)

Parallel Blade Volume Damper 3000P-72X40 T-Bar 055 T6 extruded aluminum frameh3. 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