4" 3 Hour Vertical Mount Fire Door 2661-6X6 past 12 months Extruded aluminum surface mount frame

Extruded aluminum surface mount frame with signature line marks

Hinged perforated face with screwdriver access to release

Mounting holes with color matching 2" baseboard Phillips screws

055 T6 aluminum surface mount return air grille * 45 fixed blades parallel to longest dimension * Countersunk mounting holes for flush appearance with color matching Phillips posi-drive screws * Soft White Options * 905 O - recessed screwdriver operated opposed blade damper * No Labor Collar (square sizes only) * 900 T - T-Bar mount * 905 HD - reinforced construction * 905 IS - insect screen * 1335-1338 Series - stainless steel version * Fractional

855 Series Engineering/Performance Data

4" 3 Hour Vertical Mount Fire Door 2661-6X6 past 12 months Extruded aluminum surface mount frameh3. 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"