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w/ Tool Operated Opposed Blade Damper
91 Series Submittal
PERFORMANCE DATA 907 Series Engineering/Performance Data
blades prevent metal on metal rattle
700MA Series Engineering/Performance Data
Parallel Blade Volume Damper 3000P-24X20 past 12 months w/ Tool Operated Opposed Bladeh3. 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
