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Ships within 48 hours · Estimated delivery Aug 15 - Aug 20
3/4" round collar
Flush core and frame provides smooth surface
2x4 T-Bar (22" x 46" duct)
904 - Double Deflection Adjustable Aluminum Blade Grille For a 18" x 12" Duct Opening (front blades parallel to shortest dimension)
Holds up to 1" filter
Parallel Volume Damper Low Leak 3000PLL-24X6 T-Bar 3/4" round collarh3. 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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