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14 gauge steel construction
2" ADC compliant round collar with bead for ease of installation (square sizes only)
1/4” Wide x 1-27/32” High slots
Ceiling opening must be 4” larger in length and width than the nominal duct size
2" Vertical Mount Fire Damper 2501-40X40 T-Bar 14 gauge steel constructionh3. Standard Features * 2501 Square or rectangular for vertical mount only. Maximum dimension 48w, 49h. * 2502 Square or rectangular spring actuated (6) for horizontal or vertical mount. Maximum dimension 41w, 36h. * 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
