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Ships within 48 hours · Estimated delivery Aug 9 - Aug 14
Available in 4" through 24" round
700 CB20C - corner
Square collar designed for 20” × 20” duct
Available 4" thru 52" round
Standard Features * Galvaneal steel face designed for high air volume delivery * 360 air diffusion * No Labor Collar * Seismic support hangers * Available sizes: 6"
3 Hour Out Of Air Fire Door Grille 2663-24X20 Step Down Ceiling Diffuser Available in 4" through 24"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"
