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Ships within 48 hours · Estimated delivery Aug 25 - Aug 30
with 75% free area
back blades parallel to the shortest dimension Extruded aluminum surface mount frame with signature line marks Provides 4-way air flow on one plane Nylon bushings on adj
Ceiling opening must be 4” larger in length and width than the nominal duct size
2x4 * Soft White
Center margins are mounted on the backside of the grille for a streamlined continuous look
3 Hour Out Of Air Fire Door Grille 2663-48X16 Step Down Ceiling Diffuser with 75% free areah3. 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"
