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1x2 T-Bar (10" x 22" duct)
Recessed screwdriver operated Opposed Blade Damper
Plated Metal or Wood Finish available on this product
945 Series Engineering/Performance Data
For damper free area chart A click here * 2663 - Out-of-Airstream fire door
3 Hour Out Of Air Fire Door Grille 2663-20X12 past 12 months 1x2 T-Bar (10" x 22"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"
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