4" 3 Hour Vertical Mount Fire Door 2661-12X12 past 12 months 950 Series Submittal

950 Series Submittal

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

Spring actuated curtain-type fire damper with 2 1/4" round connection for horizontal or vertical mount

3-way register with stiffened 1/2" fan shaped louvers for silent operation

91 Series Submittal

4" 3 Hour Vertical Mount Fire Door 2661-12X12 past 12 months 950 Series Submittalh3. 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"