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Tool operated Opposed Blade Damper
904 - Double Deflection Adjustable Aluminum Blade Grille For a 36" x 4" Duct Opening (front blades parallel to shortest dimension)
Heavy Duty ConstructionMRI CompatibleInsect Screen
Accessory to the 90 Series
904 - Double Deflection Adjustable Aluminum Blade Grille For a 48" x 20" Duct Opening (front blades parallel to shortest dimension)
2" Vertical Mount Fire Damper 2501-36X30 Accessories Tool operated Opposed Blade Damperh3. Standard Features * 2501 Square or rectangular for vertical mount only. Maximum dimension 48w, 49h. * 2502 Square or rectangular spring actuated (6) for horizontal or vertical mount. Maximum dimension 41w, 36h. * UL and California State Fire Marshall approved * 2" thinline frame * Interlocking steel roll formed blade (3) with roll formed frames (1) * Blade lock (5) * Damper manufactured from corrosion tested galvanized mild steel (G 90) * Self
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