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2" ADC compliant round collar with bead for ease of installation (square sizes only)
Blade lock to secure blades once the product is activated
Ceiling opening must be 4” larger in length and width than the nominal duct size
055 T6 extruded aluminum * Five air patterns: 700 CB10 - one way
14 gauge steel construction
4 1/4" Vertical Mount Fire Damper 2633-16X8 T-Bar 2" ADC compliant round collarh3. 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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