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Ships within 48 hours · Estimated delivery Aug 14 - Aug 19
For damper free area chart B click here * 2665 - Round fire door for vertical mount only
Interlocking steel roll-formed blades
Individually welded 14 guage diffusion bars
Standard Features *
4" 3 Hour Vertical Mount Fire Door 2661-48X44 Step Down Ceiling Diffuser For damper free area charth3. 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"
US$ 102.00
US$ 200.00
