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Ships within 48 hours · Estimated delivery Aug 27 - Sep 1
" Spiral pipe diameter must be 4” larger than width of grille
Tool operated Opposed Blade Damper
Fractional
425 Series Submittal
Parallel Volume Damper Low Leak 3000PLL-54X54 Commercial " Spiral pipe diameter musth3. 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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