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Countersunk mounting holes with color matching Philips posi-drive screws
Extruded aluminum surface mount frame with signature line marks
Zinc plated steel closure spring
Double deflection transition box mount spiral pipe grille
Install with louvers in up or down position for best duct concealment
4" Horizontal/Vertical Mount Fire Damper 2634-22X22 T-Bar Countersunk mounting holes with colorh3. Standard Features * 2633 Square or rectangular out of airstream fire damper for vertical mount only. * 2634 Square or rectangular Spring actuated (6) out of airstream fire damper for horizontal or vertical mount. * UL and California State Fire Marshall approved * 4 1 4" standard frame style * Maximum dimension 60w, 52h * Interlocking steel roll formed blade (3) with roll formed frames (1) * Blade lock (5) * Damper manufactured from corrosion
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