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1600 Series Engineering/Performance Data
available 4" through 40" round (2549)
53% free area * 1306: 3/4" lattice opening
102 P - two way
102C - corner
3 Hour Out Of Air Fire Door Grille 2663-48X18 Accessories 1600 Series Engineering/Performance Datah3. 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"
