Smoke Fire-Tite® Flat

Smoke Fire Tite Logo

Product Features

  • High quality fire door designed to prevent the spread of smoke
  • Alpine’s Smoke Fire-Tite® smoke rated and fire rated door has all the features of the coiling Fire-Tite® with the addition of an “S” rating for smoke leakage
  • Perimeter smoke seals standard
  • Approved for stainless steel fire doors
  • Built in accordance with the requirements specified by Underwriters Laboratories Inc

Alpine’s Smoke-Fire-Tite® Flat Slat Doors are ideal for use in school cafeterias, healthcare facilities, hospitals, chemical warehouses and airport concession displays.

Functional Benefits

  • These doors provide access control and security protection under normal use and will close automatically in the event of a fire, serving as fire stopping to contain the spread of a fire.
  • Conventional design offers a push-up operation product, where Auto Fire-Tite® products do not (max. push-up dimension: 10’ft wide x 10’ft high).
  • Hand Chain or Motor Operation available for larger sizes. 
  • Fire Doors activated only by 165º fusible link (Conventional) carry the lowest upfront cost available.
  • 3 hr Rating- 3 hour approved for doors in dividing fire walls.
  • 1-1/2 hr Rating- 1.5 hour approved for doors, in vertical shaft openings.
  • 3/4 hr Rating- 0.75 hour approved for doors in a corridor or a room-partition.
  • 4 Hour Rated (Optional) Consult factory for more information.
  • Fire rated doors over 152 square feet will receive a Classified UL label marked “OVERSIZE ROLLING STEEL FIRE DOOR” that includes the hourly rating as well as the certification number.

The Alpine Advantage and Benefit

  1. Alpine’s Auto Fire-Tite® doors ensure security and fire protection and are listed and/or classified by
    • Underwriters Laboratories, Inc., (U.L.)
    • Underwriter’s Laboratories of Canada, Inc. (U.L.C.)
    • Factory Mutual (F.M.) *Flame Drop Baffle Required*
  2. Alpine Fire-Tite® Doors are available with 2.75” Flat slats as well as 3” or 4” Curved slats.
  3. Made-To-Order manufacturing process. Alpine builds your product to the exact size specified by you.
  4. Alpine builds trust by providing our products with a 2-year warranty on material and workmanship. As we also offer an optional five-year prorated warranty. Please call factory for more information on our prorated warranties. 
  5. We are an ISO 9001 registered firm which ensures you that our products are built with true quality you can count on.

Installation

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

CURTAIN
Flat Slats constructed of interlocking, roll-formed galvanized steel, G90 coating exterior, (G60 interior), Structural Quality Grade D, as per ASTM-653/A653-M) in 22 Gauge. Optional Gauges in 20 and 18.  Curtain equipped with a bottom bar which consists of two roll-formed galvanized steel angles  and is designed to reinforce the bottom of the curtain. The bottom bar is equipped with a vinyl, smoke seal astragal.
Material Options: Stainless Steel
Finish Options: Finish Coat of Grey, White, or Tan or ExoShield™ Powder Coating
> Click here for available Powder Coating colors.

GALVANIZED ENDLOCKS/WINDLOCKS
Ductile Cast iron, hot-dipped galvanized endlocks/windlocks are riveted to the ends of the slats with 1/4” rivets. Option in brass material which prevents sparking. Furnish windlocks based on wind load specifications.

BOTTOM BAR
Two roll-formed galvanized steel  angles which are designed to reinforce the bottom of the curtain. Equipped with rubber astragal or a sensing edge which extends into the guides. Galvanized steel as per ASTM-A653/A653-M.
OPTION: Structural Steel angles with exclusive Exo-Shield™ Powder coating or Stainless Steel to match curtain.

BRACKETS
Alpine Grey Carbon Steel plate not less than 1/4” thick with ball bearings at rotating support points on both brackets.   Bolts to the wall mounting angle that supports the barrel/pipe assembly with ½” fasteners. They are also supplied with an oscillating governor, Governor Wheel (Spur gear for hand chain or motor operated doors) and drop arms that allow for a controlled drop in the event of a fire or drop test.   
OPTION: Hot Dipped Galvanized or Stainless Steel.

GUIDES
Alpine’s Guide system is designed using structural steel angles with a minimum thickness of 3/16” meeting the ASTM A36 Standard that are bolted together with ⅜” fasteners in expansion slotted connections bolted at a minimum 24” on center with removable bellmouth stops to allow for curtain maintenance without removal of the guides. One inch spacing of the guide channel ensures smooth operation.

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. (cycle options of up to 400,000 cycles, please consult factory)
Standard Finish: Black Rust-inhibitor Primer.
Optional Finish: Zinc Enriched Powder Coat or Stainless Steel.

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 on oversized doors as required to prevent excessive sag.
FACTORY MUTUAL COMPLIANT DOORS REQUIRE A FIRE DAMPER IN THE HOOD.
Standard Finish: Galvanized
Optional Finish & Material: Prime Painted, ExoShield™ Powder Coat or Stainless Steel.

LOCKING
Option 1: Slide bolt locks on the bottom bar. (Motorized doors require electric interlocks.)
Option 2: Cylinder locks. 
Option 3: Padlockable chain keeper on guides.

Choice of push-up, lift handles on the bottom bar, removable awning type crank, or motor operation. 

Alpine Motor Operators

Alpine’s Redi-Master is a heavy industrial-duty, gear reduce hoist operator. Its features include a reduction unit comprised of a heavy-duty worme in an oil bath unit. The standard horsepower of the Redi-Master steel door operator is 1/2 and has a maximum horsepower. The Redi-Master includes a hand chain, a maintenance alert system, and a maximum run timer that automatically stops the door if it moves longer than its preset cycle time.
> View Redi-Master Details
Alpine’s Redi-Hoist is a medium-duty, belt drive hoist operator with an auxiliary chain hoist. It has a maximum 1/2 horsepower and it is available for use on doors up to 10′ by 10′. The Redi­Hoist electric gate operator comes with an emergency floor disconnect for manual operation by hand chain.
> View Redi-Hoist Details
Alpine’s Redi-Lift is an industrial-duty, V-belt hoist operator that is available for doors up to 12′ by 12′. The Redi-Lift includes a hand chain, a maintenance alert system, and a maximum run timer that automatically stops the door if it moves longer than its preset cycle time. This electric gate operator is available up to 1 horsepower.
> View Redi-Lift Details
Alpine’s Redi-Tube is a tubular metal door motor with a built-in Handcrank overdrive. Like the Redi-Midget, it is designed for use on small rolling grilles and counter shutters where a manual chain hoist is not required. It has the option for an auxiliary chain hoist and has a limit switch capacity for up to 40 revolutions. The Redi-Tube is available for use on doors measuring up to 10′ by 8′.
> View Redi-Tube Details
Alpine’s Redi-Midget is UL Listed, gear reduced jackshaft door operator with a high starting torque. This roller shutter operator has full overload protection and is removable without affecting limit switch settings. These door operating devices come with a 3-button station, 1-button station, automatic closing timer and all types of access control equipment.
> View Redi-Midget Details
Alpine’s Redi-Robot is a high quality advanced servo window shutter motor operator in a compact package (4″ x 12″ long) encased in a NEMA 4. Planetary gear for high efficiency and exceptional reliability with your counter shutter. Its electronic overload protection eliminates the need for mechanical clutch. Output shaft speeds range from 70 to 350 RPM.
> View Redi-Robot Details

SAFETY ENTRAPMENT PROTECTION 
Option 1:
Monitored/non monitored sensing edge with a coil cord or take up reel, or a wireless monitored transmitter and receiver type sensing edge, or a non-monitored pneumatic sensing edge.
Option 2: NEMA 1 (Interior) or NEMA 4X (weather resistant) photo safety sensors mounted to the guides 6” above the finished floor that project an infrared beam across the width of the door.  Breaking the beam while the door is in motion will result in the immediate stop of downward travel and reverse the door to reopen to the top limit.
Option 3: Redi-Reverse Light Curtain consists of a 6’0” high light curtain integral to the guides, left and right. If an object passes through the light curtain during the close cycle, the door will reverse to the open cycle and come to rest upon reaching the open limit.

Access Controls
Open/close/stop push button stations, key switches, exit loops, remote transmitters and various other types of interior or exterior mounted controls 
> Click for Access Control Details

These are the operator options for Alpine’s Mall-Dawn® security door. Please see our entire line of service door operators. Alpine’s security door operator is UL 325 standard and constructed with the highest quality material and the latest in technical innovation. This ensures that each roll up door motor exceeds the requirements it is meant to achieve. Alpine is sure to have an operator that will meet all your individual specifications.

Contact Alpine to learn more about these motor operators today!

To view/download CAD drawings as PDFs, please click on the links below.

To receive CAD files, please request them here.

The Wind-Tite AutoCAD drawing and AutoCAD detail are for informational purposes. They may change at any time. They comply with 080000 and 08330 construction specifications pertaining to roll up doors. The CAD detail and CAD drawing reflect the options that are available to the architects and engineers compiling an AutoCAD drawing to present to contractors. 08000 and 08330 Construction of rolling and coiling doors is reflected in the CAD drawing and CAD detail. Counter shutters may be found on the left of this page. Roll up steel door drawing details files may be obtained at the top left of this page.

A new introduction of AutoCAD Drawing Generator is now available on Alpines public website: https://WebGen.Alpinedoors.com/. Register and generate your drawing by clicking on CAD Drawing Download.

First time Users: please register and immediately generate AutoCAD DXF drawings and PDF downloads.

Note: Please Retain all drawing numbers to retrieve and modify your drawing with our Alpine Engineering Team

The roll up metal coiling doors AutoCAD detail and AutoCAD drawing will be updated regularly. Alpine’s roll up steel door and rolling metal doors are built to last.

Wind-Tite® 08300 Specialty Doors

> Download 3 Part Specifications (PDF)
> Download 3 Part Specifications (DOC)

Model WIND-TITE®
Flat Slats
Warehouse Security Doors

NOTE: For specifications for 08330 coiling doors, 08300 specialty doors and warehouse security doors, architects must choose from a variety of options. The standard choice will be shown first in plain text followed by the options shown in [brackets] (Example “Finish: Galvanized [Powder coated] [Baked enamel]”). The specifier must make the appropriate choice and delete the others (Example: “Finish: Powder coated”).

GENERAL

1.01 SUMMARY OF 08300 Specialty Doors, 08330 Coiling Doors, Warehouse Security Doors

A. This section includes: [Manual] or [Electric] operated Full Weather Sealed Rolling Service Door.

1. Cycle life: Design doors of standard construction for normal use of 10,000 cycles standard [up to 400,000 cycles].

2. Design doors to withstand a windload of _____ psf.

B. Related Sections for 8300 Specialty Doors, 08330 Coiling Doors, Warehouse Security Doors: Related to this section but not limited to the following (based on Master Format 2004):

1. Section 01660 – Product Storage and Handling Requirements.

2. Section 04220 – Concrete Unit Masonry.

3. Section 05120 – Structural Steel.

4. Section 06100 – Rough Carpentry.

5. Section 08310 – Access Doors and Panels.

6. Section 08710 – Door Hardware.

7. Section 09290 – Gypsum Board.

8. Section 09900 – Paints and Coatings.

9. Section 26000 – Electrical.

1.02 REFERENCES FOR 08300 Specialty Doors, 08330 Coiling Doors, Warehouse Security Doors

A. ASTM A 653/A 653M – Standard Specification for Steel Sheet, Zinc-Coated (Galvanized) or Zinc-Iron Alloy-Coated (Galvannealed) by the Hot-Dip Process

B. ASTM A 36 – Standard Specification for Carbon Structural Steel, Hot Rolled Steel

C. ASTM A 123 – Standard Specification for Zinc (Hot-Dip Galvanized) Coatings on Iron and Steel Products

D. ASTM A 312 – Standard Specification for Seamless, Welded, and Heavily Cold Worked Austenitic Stainless Steel Pipes

E. ASTM A 240 – Standard Specification for Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels and for General Applications

F. ASTM A 276 – Standard Specification for Stainless Steel Bars and Shapes

G. ASTM B 209 – Standard Specification for Aluminum and Aluminum-Alloy Sheet and Plate

H. ASTM B 221 – Standard Specification for Aluminum and Aluminum-Alloy Extruded Bars, Rods, Wire, Profiles, and Tubes

1.03 SUBMITTALS for 08300 Specialty Doors, 08330 Coiling Doors, Warehouse Security Doors

A. Submit under provisions of Section 01300.

B. Product Data: Provide manufacturer’s standard details and catalog data. Provide installation instructions.

C. Shop Drawings: Furnish shop drawings for architect’s approval. Include elevation, sections, and details indicating dimensions, materials, finishes, conditions for anchorage and support of each door.

D. Submit manufacturer’s recommended operation, troubleshooting, and maintenance instructions.

1.04 QUALITY ASSURANCE

A. Manufacturer: Metal coiling doors shall be manufactured by a firm with a minimum of five years experience.

B. Single-Source Responsibility: Manufacturer shall provide doors, tracks, motors, and accessories for each type of door. Secondary components shall come from a source acceptable to the manufacturer of the primary components.

1.05 DELIVERY, STORAGE, AND HANDLING OF 08300 Specialty Doors, 08330 Coiling Doors, Warehouse Security Doors

A. Deliver materials in original packaging supplied by manufacturer with intact labels. Store materials away from harmful environmental conditions and construction.

1.06 WARRANTY

A. Door Warranty: Provide one year written warranty from date of installation against deficiencies due to defects in materials or workmanship. Installer agrees to repair or replace any defects in materials or workmanship.

B. Project Warranty: Refer to Conditions of the Contract for project warranty provisions.

PART 2 – PRODUCTS

2.01 MANUFACTURER OF 08300 Specialty Doors, 08330 Coiling Doors, Warehouse Security Doors

A. Manufacturer: Alpine Overhead Doors, Inc.; 8 Hulse Road Suite 1S, East Setauket, NY 11733. Telephone 800-257-4634 or 631-473-9300. Fax 631-642-0800.

B. Model: WIND-TITE® Weather Sealed Rolling Service Door

2.02 MATERIALS FOR WAREHOUSE SECURITY DOORS

A. Curtain:

1. Slats: Constructed of interlocking, roll-formed 2 ¾” flat slats.

a) Material:

i) Galvanized steel, G90 coating exterior (G60 interior), Structural Quality Grade C, as per ASTM A 653/ A 653 M

Finish: Galvanized [Powder coated] [Baked enamel] (Minimum coating conforming with Coating Designation G-01 is required)

– OR –

ii) ASTM 240 Stainless steel 300 series

Finish: [Mill finish #2B] [#4 satin finish]

– OR –

iii) Aluminum

Finish: Mill Finish [Clear anodized] [Bronze anodized] [Black anodized]

b) Gauge (dependent on windload specifications):

i) Galvanized/Stainless: Minimum 22 gauge as manufacturer standard [20, 18, 16, 14 gauge].

ii) Aluminum: Minimum 0.050” thick.

c) [Vision Lite panels]: 6” by 1 ¼” oval cut out with clear acrylic windows.

2. Endlocks and Windlocks:

a) Ductile cast iron, hot-dip galvanized [brass] endlocks/windlocks riveted (solid rivets, minimum ¼” thick) to ends of each slat to prevent lateral movement and to limit slat deflection and bending stress. Furnish windlocks based on windload specifications. Windlocks increase resistance to curtain jamming.

3. Bottom Bar: (Match to slat material)

a) Two roll formed steel [aluminum] angles, which extend into guides, designed to reinforce curtain bottom. Equip with vinyl weatherstrip. (Size dependent on dimensions per manufacturer’s standard)

i) Galvanized Steel as per ASTM A 653/ A 653 M

Finish: Gray shop prime [Powder Coated] [Baked Enamel]

– OR –

ii) ASTM 240 Stainless Steel 300 Series

Finish: [Mill finish #2B] [#4 satin finish]

– OR –

iii) Aluminum

Finish: Mill Finish [Clear anodized] [Bronze anodized] [Black anodized]

B. Guides for 08300 Specialty Doors, 08330 Coiling Doors, Warehouse Security Doors:

1. Guides shall be designed using structural angles with a minimum thickness of 3/16”, minimum 1 ¼” slotted connections, and removable bellmouth curtain stops to allow for curtain maintenance without removal of guides. Bellmouth stops shall be flush with guide groove. Guides shall be fastened with minimum 3/8” bolts at minimum 24” o.c. Equip with vinyl weather seals.

a) Material:

i) ASTM A 36 Carbon Structural Steel

Finish: Gray shop prime coat [ASTM A 123 Galvanized] [baked enamel paint] [powder coated].

– OR –

ii) ASTM 276 Stainless Steel 300 Series

Finish: [Mill finish #2B] [#4 finish satin]

– OR –

iii) Extruded Aluminum

Finish: Mill Finish [Clear anodized] [Bronze anodized] [Black anodized]

C. Door Support Brackets and Mounting Plates for 08300 Specialty Doors, 08330 Coiling Doors, Warehouse Security Doors:

1. Steel plate not less than 1/4” thick. Provide ball bearings at rotating support points. Bolt plates to wall mounting angles with minimum 1/2″ fasteners. Plate supports counterbalance assembly and forms end enclosures.

a) Material:

i) ASTM A 36 Carbon Steel:

Finish: Gray shop prime coat [ASTM A 123 Galvanized] [Baked enamel paint] [Powder coated].

– OR –

ii) ASTM 240 Stainless Steel 300 Series

Finish: [Mill Finish #2B]

b) [Stop Lock bearing]: To prevent door from free falling in the event drive operation fails.

D. Counterbalance Assembly for 08300 Specialty Doors, 08330 Coiling Doors, Warehouse Security Doors: Torsion

1. Counterbalance assembly: Steel pipe barrel of a size capable of carrying a curtain load with a maximum deflection of 0.03” per foot of door width. Heat-treated helical torsion springs encased in a steel pipe and designed to include an overload factor of 25% to ensure minimum effort to operate. Sealed and prelubricated high speed ball bearing at rotating support points. Torsion spring charge wheel for applying spring torque and for future adjustments.

a) Material:

i) ASTM A 36 Carbon Structural Steel

Finish: Gray shop prime coat [A 123 Hot-Dip Galvanized]

– OR –

ii) A 312 Stainless Steel 300 Series

Finish: Mill finish

b) Life Cycle: High Cycle springs designed to satisfy 10m through 400m life cycles. Consult engineering if height exceeds width for any cycle above 20m. (Cycle defined as one time opening and closing of door)

E. Hood:

1. 24 gauge steel [.040” aluminum]. Formed to fit the contour of the end brackets with reinforced top and bottom edges. Provide support bracing for doors wider than 20 feet at every 10 feet to prevent excessive sag. Equip with neoprene air baffle.

2. Shape: Hexagon [square] [round]

3. Material:

a) Galvanized Steel as per ASTM A 653/ A 653 M

Finish: [Baked enamel paint] [Powder coated]

– OR –

b) ASTM 240 Stainless Steel 300 Series:

Finish: [Mill finish #2B] [#4 satin finish]

– OR –

c) Aluminum

Finish: Mill Finish [Clear anodized] [Bronze anodized] [Black anodized]

4. Hood Baffle: Neoprene air baffle to prevent infiltration through header.

5. [Fascia]: Galvanized [Stainless Steel] [Aluminum], provided where areas behind door hood are open. Materials same as hood.

F. Locking of 08300 Specialty Doors, 08330 Coiling Doors, Warehouse Security Doors:

1. Slide locks: Provide pad-lockable slide locks for latching and locking door on coil side bottom bar at each jamb extending into slots in guides. [Cylinder Locks] (Electric Interlocks recommended with motorized doors only)

2. Manual chain hoist: Provide pad-lockable chain keeper on guide.

2.03 OPERATION FOR 08300 Specialty Doors, 08330 Coiling Doors, Warehouse Security Doors:

A. Opening/Closing: Manual push-up [Manual hand chain] [Manual hand crank] [Motor Operator].

B. [Manual hand chain]:

1. Provide chain hoist operator with endless steel chain, chain pocket wheel and guard, geared reduction unit, and chain keeper secured to guide.

C. [Manual hand crank]:

1. Provide crank hoist operator including crank gear box, steel crank drive shaft and geared reduction unit. Fabricate gear box to completely enclose operating mechanism and be oil-tight.

D. [Motor Operators]:

1. Choose ONE:

a) Medium-Duty, Alpine® Model Redi-Hoist™ driven by efficient V-belt primary drive with chain/sprocket secondary. Maximum ½ hp. For use on doors up to 10’ x 10’.

– OR –

b) Industrial-Duty, Alpine® Model Redi-Lift™ driven by heavy-duty V-belt with chain/sprocket secondary reduction. Optional auxiliary chain hoist. Maximum 1 hp. For use on doors up to 12’ x 12’.

– OR –

c) Heavy Industrial-Duty, Alpine® Model Redi-Master™ driven by heavy-duty worm gear in oil bath reduction. Standard auxiliary chain hoist. Standard ½ hp (maximum 3 hp)

– OR –

d) Redi-Tube® Tubular Motor with Built-In Manual Handcrank Overdrive. Auxiliary chain hoist not available. For use on doors up to 10’ x 8’.

– OR –

e) Redi-Midget® Gear Reduced Jackshaft Door Operator.

2. [Sensing Edges] (For double angle bottom bar): For motorized doors, sensing edges allow door to go up in case of obstruction. [Pneumatic Edge] [Electric Edge] [Wireless Edge].

a) Colors: Gray [Yellow] [Black] [White] [Yellow with black stripes]

2.04 MOUNTING: [Neoprene Lintel baffle]

1. Interior face mounted on prepared opening.

2. Interior mounted between jambs and under lintel in a prepared opening.

3. Exterior face mounted on prepared opening.

PART 3 – EXECUTION

3.01 EXAMINATION OF 08300 Specialty Doors, 08330 Coiling Doors, Warehouse Security Doors

A. Verify that dimensions are correct and project conditions are in accordance with manufacturer’s installation instructions; do not proceed with installation until unacceptable conditions have been corrected.

3.02 INSTALLATION OF WAREHOUSE SECURITY DOORS

A. Install units in accordance with manufacturer’s instructions.

B. Ensure that units are installed plumb and true, free of warp or twist, and within tolerances specified by manufacturer for smooth operation.

3.03 FIELD TESTING

A. Test doors for regular operation.

3.04 DEMONSTRATION OF 08300 Specialty Doors, 08330 Coiling Doors, Warehouse Security Doors

A. Instruct the Owner’s personnel in correct operation and maintenance of units.

3.05 ADJUST AND CLEAN

A. Clean units in accordance with manufacturer’s instructions.

B. Restore slight blemishes in finishes in accordance with manufacturer’s instructions to match original finish. Remove and provide new units where repairs are not acceptable to the Architect. (End of 3 part Specifications.)

FM Approved

3 Hour approved for smoke doors in dividing fire walls with openings not exceeding 120 sq. ft. in area. • 1.5 Hour approved for doors in vertical shaft openings not exceeding 120 sq. ft. in area. • .75 Hour approved for smoke shield doors in corridor or room-partition opening not exceeding 120 sq. ft. in area. • 1.5 Hour approved for doors in exterior wall opening not exceeding 120 sq. ft. in area.

The Alpine Smoke Fire-Tite® smoke rated doors have all the features of the Fire-Tite® with the addition of an “S” rating for smoke leakage. The Smoke Fire-Tite® smoke fire shutter utilizes a vinyl smoke seal on the bottom bar, brush seals on the guides and lintel to stop the movement of smoke through the shutter. This prevents property damage and health risks. If you need a window protected, click here to see our line of fire shutters.

Smoke Fire-Tite® curtains are constructed of galvanized steel in 2 3/4″ flat slats and can be finished with powder coating or baked enamel finishes. Each smoke fire shutter is equipped with a 22 gauge steel hood formed to fit the contour of the end brackets. These smoke sealed doors have durable ductile iron endlocks with 1/4″ semi-solid rivets. Wind locks are also available. Our supports and brackets for smoke doors are all steel plates no less than 1/4″ thick. Alpine’s smoke shield doors torsion counterbalance assembly is state of the art, providing maximum security and ease of use. See suggested operators for smoke rated doors.

2 3/4″ Flat Slat