Parallel Volume Damper Low Leak 3000PLL-66X50 T-Bar alternate frame is extruded aluminum

alternate frame is extruded aluminum with signature line marks

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

Options * Sleeve variations h3

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

055 T6 extruded aluminum surface mount supply diffuser * Four air patterns: CB10 - one way

Parallel Volume Damper Low Leak 3000PLL-66X50 T-Bar alternate frame is extruded aluminumh3. 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