4" 3 Hour Vertical Mount Fire Door 2661-12X10 T-Bar Heavy Duty ConstructionMRI CompatibleInsect Screen

Heavy Duty ConstructionMRI CompatibleInsect Screen

* 3 hour rated * UL and California State Fire Marshall approved * 4-1/4" standard frame style * Interlocking steel roll-formed blade (3) with roll-formed frames (1) * Blade lock (5) * Damper manufactured from corrosion tested galvanized mild steel (G-90) * Self locking corner (4) * 165° replaceable fusible link (2) h3

916 Series Engineering/Performance Data

*Note: Ceramic fiber blade insulation is not UL required on dampers with free areas less than 80 square inches

Standard Features * T-Bar lay-in panel with hinged perforated face * Galvaneal steel 2x2 panel with seismic hangers * Spring push release for removal of perforated face * Round No Labor Collar sizes: 6-10"

4" 3 Hour Vertical Mount Fire Door 2661-12X10 T-Bar Heavy Duty ConstructionMRI CompatibleInsect Screenh3. 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"