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Ships within 48 hours · Estimated delivery Aug 17 - Aug 22
Minimum size 4"x4"
904 - Double Deflection Adjustable Aluminum Blade Grille For a 48" x 30" Duct Opening (front blades parallel to shortest dimension)
PERFORMANCE DATA 600TFG Series Engineering/Performance Data
Adjustable blades oriented for 3 or 4-way air flow pattern
Parallel Blade Volume Damper 3000P-54X20 Smoke-Fire Damper Minimum size 4"x4"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
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