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Ships within 48 hours · Estimated delivery Aug 14 - Aug 19
Steel construction
Concealed mounting holes
Countersunk mounting holes with color matching Phillips Pozidriv screws
CSFM California State Fire Marshal listed
Smoke Test and More Information on MA Series Diffusers
4" Round Vertical Mount Fire Damper 2649-22 Smoke-Fire Damper Steel constructionh3. 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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