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SD34 - Transition Box Spiral Pipe Grille (DOUBle Deflection)
Product sizes available to fit spiral pipe diameters 8” – 48
Building materials rated 3 hours or less
904 - Double Deflection Adjustable Aluminum Blade Grille For a 30" x 10" Duct Opening (front blades parallel to shortest dimension)
955 Series Engineering/Performance Data
4" Round Horizontal/Vertical Fire Damper 2650-20 Smoke-Fire Damper SD34 - Transition Box Spiralh3. 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
US$ 691.90
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US$ 489.50
US$ 166.10
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US$ 1703.90
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