3 Hour Out Of Air Fire Door Grille 2663-22X22 Specialty Products 14" and 16" Options *

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

Options (must specify when ordering)

53% free area * 1306: 3/4" lattice opening

904 - Double Deflection Adjustable Aluminum Blade Grille For a 36" x 14" Duct Opening (front blades parallel to shortest dimension)

3 Hour Out Of Air Fire Door Grille 2663-22X22 Specialty Products 14" and 16" Options *h3. 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"