Parallel Blade Volume Damper 3000P-66X24 Commercial 904 Series Performance Data

904 Series Performance Data

Standard Features * Individually adjustable curved blade T-Bar diffuser * Core is constructed of

904 - Double Deflection Adjustable Aluminum Blade Grille For a 30" x 30" Duct Opening (front blades parallel to shortest dimension)

floors and partitions with fire resistance ratings of 2 hours or less (for ceiling application

904 - Double Deflection Adjustable Aluminum Blade Grille For a 24" x 16" duct Opening  (front blades parallel to shortest dimension)

Parallel Blade Volume Damper 3000P-66X24 Commercial 904 Series Performance Datah3. 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