4" 3 Hour Vertical Mount Fire Door 2661-12X10 T-Bar 916 Series Engineering/Performance Data

916 Series Engineering/Performance Data

Countersunk mounting holes for flush appearance with color matching Phillips Pozidriv screws

Square or rectangular ceiling radiation butterfly damper

Note: Sizes are Listed Nominal Duct Opening

1" and 1 1/2"

4" 3 Hour Vertical Mount Fire Door 2661-12X10 T-Bar 916 Series Engineering/Performance Datah3. 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"