Parallel Volume Damper Low Leak 3000PLL-60X48 Step Down Ceiling Diffuser Extruded aluminum surface mount frame

Extruded aluminum surface mount frame with signature line marks

For damper free area chart A click here * 2563 - Out-of-Airstream fire door

Surface mount fixed blade grille with airfoil blades at 0°

904 - Double Deflection Adjustable Aluminum Blade Grille For a 36" x 10" Duct Opening (front blades parallel to shortest dimension)

Standard Features * 1/2" spacing dual angular louvers * 22 & 20 gauge cold roll steel * Mullions are reinforced with stiffeners for greater strength * For applications where greater air volume is required * Install with louvers in up or down position for best duct concealment * Countersunk mounting holes for flush appearance with color matching Phillips posi-drive screws * Soft White Options * Tamper proof screws * Standard Color

Parallel Volume Damper Low Leak 3000PLL-60X48 Step Down Ceiling Diffuser Extruded aluminum surface mount 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