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Ships within 48 hours · Estimated delivery Aug 12 - Aug 17
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
Standard Features * Individually adjustable curved blade T-Bar diffuser * Core is constructed of
RD Series Engineering/Performance Data
Airfoil blades individually adjustable on 3/4" centers
4" Round Horizontal/Vertical Fire Damper 2650-30 Step Down Ceiling Diffuser 60% free area * Softh3. 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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