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Ships within 48 hours · Estimated delivery Aug 10 - Aug 15
Ceiling opening must be 4” larger in length and width than the nominal duct size
Standard Features Double deflection surface mount grille with adjustable airfoil blades Front blades parallel to longest dimension
2-way reversible door on rectangular sizes
Maximum dimension 41w
Standard Features * 3-way diffusion for draft-free heat or air conditioning * For ceiling or sidewall applications * All component parts
3 Hour Out Of Air Fire Door Grille 2663-48X28 Residential Registers & Grilles Ceiling opening must be 4”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"
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