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Ships within 48 hours · Estimated delivery Nov 16 - Nov 21
1" and 1 1/2"
Individually welded 14 guage diffusion bars
Long throw individually adjustable blades with 1 1/2" blades on 1 1/2" centers or 3" blades on 3" centers
SUBMITTAL 2720 Series Submittal
Holds up to a 4" filter (not included) with filter retention tabs (FG4)
3 Hour Out Of Air Fire Door Grille 2663-36X28 Residential Registers & Grilles 1" and 1 1/2"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"
