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60% free area * Soft White Options * Countersunk screwholes with matching Phillips #8 x 1-1/2" oval Screws * 10 or 12 gauge steel * Tamper proof screws
850 Series Engineering/Performance Data
Adjustable aluminum curved blades
103 P - three way
Filter retention tabs
2" Round Vertical Mount Fire Damper 2549-28 Smoke-Fire Damper 60% free area * Softh3. Standard Features * 1 1 2 hour rated fire damper * 2549 Round damper for vertical mount only. Available 4" thru 40" round. * 2550 Round Spring actuated (6) damper for vertical or horizontal mount. Available 4" thru 28" round. * 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
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