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Ships within 48 hours · Estimated delivery Nov 4 - Nov 9
Building materials rated 2 hours or less
Available in 6”–12” collar sizes
1/4” crossbars
T-Bar hinged 2 Cone Step Down Diffuser with Round Collar
904 - Double Deflection Adjustable Aluminum Blade Grille For a 48" x 24" Duct Opening (front blades parallel to shortest dimension)
2" Round 3 Hour Vertical Fire Door 2565-32 Step Down Ceiling Diffuser Building materials rated 2 hoursh3. Standard Features * 2561 Square or rectangular fire door for vertical mount only. Maximum dimension 48w, 49h. For damper free area chart A click here * 2563 Out of Airstream fire door. Square or rectangular for vertical mount only. Maximum dimension 48w, 41h. For damper free area chart B click here * 2565 Round fire door for vertical mount only. Available 4" thru 40" round. * UL and California State Fire Marshall approved * 2" thinline frame *
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