Parallel Blade Volume Damper 3000P-70X58 Commercial Options * 3000 PLL -

Options * 3000 PLL - Low Leak Air Control Damper

904 - Double Deflection Adjustable Aluminum Blade Grille For a 48" x 20" Duct Opening (front blades parallel to shortest dimension)

Available 4" thru 52" round

Spiral pipe diameter must be 4” larger than Height of the duct opening

All steel parts with galvanized finish or zinc coating

Parallel Blade Volume Damper 3000P-70X58 Commercial Options * 3000 PLL -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