Pay in 4 interest-free payments of $31.63 Learn more
Ships within 48 hours · Estimated delivery Aug 9 - Aug 14
Minimum size is 4"x4"
w/ Tool Operated Opposed Blade Damper
Standard collar diameter is the same as the diffuser size
3/16” holes on 1/4” staggered centers
14 GA 304 SS Construction
4" 3 Hour Vertical Mount Fire Door 2661-26X26 Commercial Minimum size is 4"x4"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"
