Pay in 4 interest-free payments of $84.00 Learn more
Ships within 48 hours · Estimated delivery Aug 15 - Aug 20
Maximum single section size 24"x24"
with 75% free area Options 14 GA 304 SS Construction 12 GA (
Building materials rated 3 hours or less
listed Fire-Resistance Diffuser * TVB - Thermal Vapor Blanket * Square collar
4" 3 Hour Vertical Mount Fire Door 2661-60X40 Step Down Ceiling Diffuser Maximum single section size 24"x24"h3. Standard Features * 2661 Square or rectangular fire door for vertical mount only. Maximum dimension 60x60. For damper free area chart A click here * 2663 Out of Airstream fire door. Square or rectangular for vertical mount only. Maximum dimension 60w x 52h. For damper free area chart B click here * 2665 Round fire door for vertical mount only. Available 4" thru 52" round. * 3 hour rated * UL and California State Fire Marshall approved * 4 1 4"
US$ 16.50
US$ 75.00
US$ 75.00
