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Ships within 48 hours · Estimated delivery Aug 14 - Aug 19
Standard collar diameter is the same as the diffuser size
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
Airfoil blades individually adjustable on 3/4" centers
Heavy gauge cold roll steel
Nylon bushings for easy adjustment and quiet setting of blades running parallel to shortest dimension
3 Hour Out Of Air Fire Door Grille 2663-24X18 Specialty Products Standard collar diameter is theh3. 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"
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