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Ships within 48 hours · Estimated delivery Aug 8 - Aug 13
Adjustable blades oriented for 3 or 4-way air flow pattern
*Pricing is based on standard 14 GA steel construction
Countersunk mounting holes with color matching Philips Pozidriv screws
Standard Features * Heavy duty honeycomb construction * Blades run parallel to longest dimension given * Gym Grade - includes welded core and extra supports for heavy duty application * Mounting holes for sidewall and ceiling application * Recessed screwdriver operated opposed blade damper to control air volume for positive balance of system * Soft White Options * No mounting holes * Tamper Proof Screws * Standard Color
3 Hour Out Of Air Fire Door Grille 2663-48X48 Smoke-Fire Damper Adjustable blades oriented for 3h3. 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"
