Parallel Blade Volume Damper 3000P-68X62 past 12 months 3% maximum leakage with a

3% maximum leakage with a pressure differential 3" W

Blades are parallel to the longest dimension

Blades parallel to shortest dimension

Steel galvaneal construction

1550 Series Engineering/Performance Data

Parallel Blade Volume Damper 3000P-68X62 past 12 months 3% maximum leakage with ah3. 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