Parallel Blade Volume Damper 3000P-40X18 Commercial Allows for 2-way airflow adjustment

Allows for 2-way airflow adjustment

904 - Double Deflection Adjustable Aluminum Blade Grille For a 20" x 14" Duct Opening (front blades parallel to shortest dimension)

*Note: Ceramic fiber blade insulation is not UL required on dampers with free areas less than 80 square inches

Face set in an outer T-Bar filter grille frame

Parallel Blade Volume Damper 3000P-40X18 Commercial Allows for 2-way airflow adjustmenth3. 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