Opposed Blade Volume Damper 3000-0BD-48X20 Smoke-Fire Damper Standard Features * 1/2" spaced

Standard Features * 1/2" spaced vision-proof dual angular louvers for strength and maximum free area * Margin edges are 7/8" projection for baseboard installation * Soft White with color matching screws Options * 1133 - 1/3" spaced dual angular louvers * 1175 - added mullion stiffeners for greater strength * Standard Color

Directional volume diffuser with 4-way removable core

Standard Features * Solid aluminum rotatable body * Excellent for spot heating and cooling difficult areas * Can move conditioned air from an inaccessible place to the work environment * Precision adjustable aluminum air flow exit plate * Double felt flange body seal to prevent air leakage * Closed cell neoprene felt mounting gasket * Easy adjustment of air flow by turn of a knob * Maximum rotation angle 33 to 42 in all directions * Corrosion resistant anodized finish Options: * 1205 - spot diffuser in panel mount

For ceiling or sidewall applications

904 - Double Deflection Adjustable Aluminum Blade Grille For a 20" x 10" Duct Opening (front blades parallel to shortest dimension)

Opposed Blade Volume Damper 3000-0BD-48X20 Smoke-Fire Damper Standard Features * 1/2" spacedh3. Standard Features * Opposed blade operation for precise volume control * 16 gauge galvanized channel frame * Blades are vee 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.