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450 Series Engineering/Performance Data
69% free area * 1308: 7/8" lattice opening
Blade lock to secure blades once the product is activated
Spiral pipe diameter must be 4” larger than Height of the duct opening
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
2" Horizontal/Vertical Mount Fire Damper 2534-26X12 past 12 months 450 Series Engineering/Performance Datah3. Standard Features * 2533 Square or rectangular for vertical mount only. Maximum dimension 48w, 41h. * 2534 Square or rectangular spring actuated (6) for horizontal or vertical mount. Maximum dimension 41w, 29h. * 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 90) * Self
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