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.


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.

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.

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.

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.

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)