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Heavy Duty ConstructionMRI CompatibleInsect Screen
904 - Double Deflection Adjustable Aluminum Blade Grille For a 36" x 10" Duct Opening (front blades parallel to shortest dimension)
REVIT FILES Spiral Diffuser Radius Flush Mount Diffuser Single Deflection
Five air patterns available
3/16” holes on 1/4” staggered centers
4" Round Horizontal/Vertical Fire Damper 2650-36 past 12 months Heavy Duty ConstructionMRI CompatibleInsect Screenh3. Standard Features * 2649 Round damper for vertical mount only. Available 4" thru 52" round. * 2650 Round spring actuated (6) damper for vertical or horizontal mount. Available 4" thru 52" round. * UL and California State Fire Marshall approved * 4 1 4" standard frame style * 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 locking
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