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Ships within 48 hours · Estimated delivery Aug 20 - Aug 25
w/ Tool Operated Opposed Blade Damper
Nylon bushings on adj
904 - Double Deflection Adjustable Aluminum Blade Grille For a 24" x 18" Duct Opening(front blades parallel to shortest dimension)
NGD - Narrow ceiling grid dimples for 9/16" T-Rails
Standard Features * 2561 - Square or rectangular fire door for vertical mount only
4 1/4" Vertical Mount Fire Damper 2633-32X8 Accessories w/ Tool Operated Opposed Bladeh3. Standard Features * 2633 Square or rectangular out of airstream fire damper for vertical mount only. * 2634 Square or rectangular Spring actuated (6) out of airstream fire damper for horizontal or vertical mount. * UL and California State Fire Marshall approved * 4 1 4" standard frame style * Maximum dimension 60w, 52h * Interlocking steel roll formed blade (3) with roll formed frames (1) * Blade lock (5) * Damper manufactured from corrosion
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