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1/2" spacing dual angular louvers
Spiral pipe diameter must be 4” larger than the width of the grille
Ceiling opening must be 4” larger in length and width than the nominal duct size
102C - corner
2" Vertical Mount Fire Damper 2533-18X10 Smoke-Fire Damper 1/2" spacing dual angular louversh3. 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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