Wide Span Openings

Radial Configurations

Cross Corridor

Vertical Exit Enclosure

Access Control

Alternative to Side-Hinged Fire Doors

Why Choose Won-Door Corporation?

In 1962, Won-Door Corporation introduced the world’s most durable acoustically rated folding partition – DuraSound. Fifteen years later the company pioneered the development of the first-ever accordion type, fire-rated horizontal sliding door. Technology developed by Won-Door engineers continues to influence the building products and fire protection industry. Click here to see why Won-Door FireGuard is the top-selling horizontal sliding fire door on the market.

Superior Performance

Universal Acceptance

The development of the accordion type, horizontal sliding fire door – as manufactured by Won-Door Corporation – has had a profound influence on the model requirements that regulate their use. They may replace traditional solutions in virtually any means of egress application.

UL Listed

The Won-Door FireGuard fire door was the first accordion type fire door to successfully pass nationally recognized tests to withstand the passage of fire. Won-Door FireGuard products are listed by Underwriters Laboratories Inc. (UL) for up to 3 hours as a rated door assembly and 2 hours as a moveable fire wall.

Advanced Electronics

Only the Won-Door FireGuard uses a state-of-the-art microprocessor activated control system to guarantee reliability and enhance door function.  This technology provides almost limitless opportunities for electronic communication, supervision, alarm activation and more.


All Won-Door products are built to withstand the test of time. Constructed of 24-gauge corrugated steel and with no exposed parts, these door assemblies are the most trouble-free accordion folding partitions in the industry.

Superior Service

With more than twenty branch sales offices and two Regional Sales Offices, plus a highly skilled team of designers, engineers and field technicians, product service and support are available across the US. Thoroughly knowledgeable about building code as well as construction, the Won-Door sales team can be relied on to guide you every step of the way.

Important info about specifying accordion-type fire doors.

All accordion-type fire doors are not created equal. The Won-Door FireGuard system makes use of the latest technology and is continually tested to make sure all current building code requirements are met or exceeded. To the right is a partial list of code requirements for accordion-type, fire rated, horizontal sliding fire doors. How does the product you’ve been using stack up?

TESTED in accordance with UL 10B, NFPA 252
2015 IBC: 716.5.2
AUTOMATIC CLOSING SYSTEM listed separately; UL 864
2016 NFPA 80 Chapter 9:
SMOKE & DRAFT shall bear the “S” label in accordance with UL 1784
2015 IBC: 716.5.7.3
When used at the POINT OF ACCESS TO AN ELEVATOR shall bear the “S” Label and be tested in accordance with UL 1784 WITHOUT AN ARTFICIAL BOTTOM SEAL
2015 IBC: 3006.3 (3)