4" 3 Hour Vertical Mount Fire Door 2661-30X26 past 12 months 1x2 T-Bar (10" x 22"

1x2 T-Bar (10" x 22" duct)

945 Series Submittal

Nylon bushings on adj

Standard Features *

Center margins are mounted on the backside of the grille for a streamlined continuous look

4" 3 Hour Vertical Mount Fire Door 2661-30X26 past 12 months 1x2 T-Bar (10" x 22"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"