The Oversize Certificate is authorized for rolling steel doors for the protection of openings in fire walls, vertical shafts and exterior walls where the area exceeds 152 square ft., or for openings in the above locations when width or height exceeds
13’6”x12’. The maximum dimensions for doors for standard fire protection provided with the Oversize Fire Door Certificate are not to exceed 56 ft. in width and 24 ft. in height. Doors are constructed to conform within requirements specified by
Underwriter’s Laboratories. Inc. (U.L.). Doors are automatic and self-closing, Class (A) (B) (C) (D) or oversized certificate. 4 hour - Approved for doors with openings not exceeding 162 sq. ft. in area. Class (A) - 3 hour approved for doors in dividing fire walls with openings not exceeding 120 sq. ft. in area. Class (B) - 1.5 hour approved for doors, in vertical shaft openings not exceeding 120 sq. ft. in area. Class (C) - 0.75 hour approved for doors in a corridor or a room-partition opening not exceeding 120 sq. ft. in area. Class (D) - 1.5 hour approved for doors in an exterior wall opening not
exceeding 120 sq. ft. in area.

APPLICATION AND USE
Fire-Tite Flat Slat Doors as manufactured by Alpine are ideal for use in School Cafeteria’s, Healthcare Facilities, Hospitals and Airport Concession Displays.

GENERAL
Rolling Fire-Tite Doors manufactured by Alpine are classified for up to a 4 hour rating and may also be installed in openings requiring a lower rating. They carry the label of Underwriter’s Laboratories, Inc., (U.L.), Classified. Opening preparation, miscellaneous or structural metal work, access doors, finish or field painting, field electrical wiring, wire, conduit, fuses and disconnect switches are in the Scope of Work of other divisons or trades.

CURTAIN
Curtains shall be constructed of interlocking, roll-formed galvanized steel 3” Curved slats, G90 coated exterior, (G60 interior), Structural Quality Grade C, as per A.S.T.M. A 653/A 653 M. Curtain equiped with a bottom bar that is made up of two roll-formed steel angles measuring 2” x 2” x 1/8”. designed to reinforce the bottom of the curtain. (Option: stainless steel slats)

FUNCTIONAL BENEFITS

BRACKETS
Made from a steel plate 1/4” thick. Ball bearing at rotating support points. Bolted to wall mounting angles with 1/2” fasteners. Plate supports counterbalance assembly and forms an end enclosure.

HOOD HEXAGON (Square or Round OPTIONAL)
Manufactured from #22 gauge galvanized steel and formed to fit the contour of the brackets. Intermediate supports are used as required in order to prevent excessive sag. (Option: Stainless Steel)

GUIDES
Guides are designed using structural steel angles with a minimum thickness of 3/16”, expansion slotted connections, and removable bellmount curtain stops to allow for curtain maintenance without removal of the guides. Bellmount stops shall be flush with the guide groove.

COUNTERBALANCE ASSEMBLY
The steel pipe barrel is a size capable of carrying a curtain load with a max. deflection of 0.03” per foot opening width. The helical torsion spring is encased in a barrel designed to require minimum effort to operate the rolling curtain and bottom bar. A Torsion Spring charge wheel is used for applying spring torque and for future adjustments. Option: Stainless steel or hot-dipped galvanized.

OPERATION
Choice of push-up, hand chain, hand-crank, or motor operation. The door can be activated by a fusible link, a thermal sensor, a fire alarm system or a smoke
detector without the need for a mechanical release device system.

LOCKING
Optional padlockable slide locks available for latching and locking the door on the coil side of the bottom bar. Electric Interlocks required with motorized doors.

FINISHES (Optional)
Finish on steel to be shop coated primer, except galvanized surfaces. Stainless steel, #2B, #4 satin, polished or mill finish. Call for color options and finishes.

GALVANIZING
To be applied to the guides, brackets, pipe shafts and gears in addition to the standard specifications. Applied where conditions of extreme or unusual atmospheric
contamination is present. (In accordance with ASTM: A123)

INSTALLATION
The opening preparation and the installation of the fire door shall be performed
in strict compliance with NFPA-80.