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104 D FR - U
TVB - Thermal Vapor Blanket
Non-standard size collar (available in 6" through 20")
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Countersunk mounting holes for flush appearance with color matching screws
2" Vertical Mount Fire Damper 2501-34X8 past 12 months 104 D FR - Uh3. 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
