Pay in 4 interest-free payments of $31.76 Learn more
Ships within 48 hours · Estimated delivery Aug 11 - Aug 16
Standard Features * 1" rim size (2" larger than nominal duct size) * 14 gauge steel * 1305: 1/2" lattice opening
Recommended Minimum Sleeve Thickness for Fire Dampers
Individually welded 14 guage diffusion bars
904 - Double Deflection Adjustable Aluminum Blade Grille For a 36" x 24" Duct Opening (front blades parallel to shortest dimension)
Hand operated lever for easy filter access and cleaning
3 Hour Out Of Air Fire Door Grille 2663-30X14 Residential Registers & Grilles Standard Features * 1" rimh3. 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"
