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Recessed screwdriver operated opposed blade damper to control air volume for positive balance of system
Designer Color or Satin Anodized Finish available on this product Drawings * CB10 * CB20 * CB30 * CB40
Narrow ceiling grid dimples for 9/16" T-Rails
1/4" cross bars
Maximum dimension 60x60 single
4" 3 Hour Vertical Mount Fire Door 2665-14 Commercial Recessed screwdriver operated opposed bladeh3. 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"
