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Mounting holes with color matching 2" baseboard Phillips screws
2" ADC compliant round collar with a bead for ease of installation
Locking screw to hold damper in place
2550 Series Submittal
back blades parallel to the shortest dimension Extruded aluminum surface mount frame with signature line marks Provides 4-way air flow on one plane Nylon bushings on adj
4" 3 Hour Vertical Mount Fire Door 2661-36X32 Specialty Products Mounting holes with color matchingh3. Standard Features * 2661 Square or rectangular fire door for vertical mount only. Maximum dimension 60x60. For damper free area chart A click here * 2663 Out of Airstream fire door. Square or rectangular for vertical mount only. Maximum dimension 60w x 52h. For damper free area chart B click here * 2665 Round fire door for vertical mount only. Available 4" thru 52" round. * 3 hour rated * UL and California State Fire Marshall approved * 4 1 4"
