4" 3 Hour Vertical Mount Fire Door 2661-24X14 past 12 months Field installable bowtie damper with

Field installable bowtie damper with round ring

055 T6) surface mount diffuser * Nylon bushings for easy adjustment and quiet setting of airfoil blades * Countersunk mounting holes for flush appearance with color matching Phillips posi-drive screws * Single deflection diffuser with adjustable airfoil blades * Airfoil blades are parallel to longest dimension * Allows 2-way air deflection on one plane * Soft White Options * 901 O - with recessed screwdriver operated opposed blade damper * 1331 and 1332 Series - stainless steel single deflection * Fractional

Options * 3000 OBDLL - Low Leak Air Control Damper

14" and 16" Options * Field installable Bowtie Damper (BD) * HL OR - factory installed opposed radial damper (sizes 6"-14") * HL FR - U

Install with louvers in up or down position for best duct concealment

4" 3 Hour Vertical Mount Fire Door 2661-24X14 past 12 months Field installable bowtie damper withh3. 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"