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Ships within 48 hours · Estimated delivery Oct 23 - Oct 28
Opposed Blade Damper standard on 4" widths
Submittal and Performance Data
Countersunk mounting holes for flush appearance with color matching screws
Available 4" thru 40" round
904 - Double Deflection Adjustable Aluminum Blade Grille For a 30" x 12" Duct Opening (front blades parallel to shortest dimension)
4" Horizontal/Vertical Mount Fire Damper 2634-48X10 Smoke-Fire Damper Opposed Blade Damper standard onh3. 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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