Overview: Won-Door accordion fire doors and traditional fire door systems each offer distinct advantages. Here’s how they compare and which solution fits your facility best. 

We’ve been saying this for a while now, but not all fire doors are built the same way.

When it comes to protecting a commercial or industrial facility from the spread of fire and smoke, the type of fire door system you choose matters as much as having one in place at all. Two of the most common solutions facilities evaluate are Won-Door accordion fire doors and traditional fire door systems — and while both serve the same fundamental purpose, they work very differently in practice.

Understanding those differences helps facility managers make the right choice for their specific environment.

What Is a Won-Door Accordion Fire Door?  

A Won-Door accordion fire door is a large-opening, side-folding fire door system designed to protect wide openings that traditional fire doors can’t practically cover.

How Does a Won-Door Accordion Fire Door Work?  

Won-Door systems operate on a track-and-fold mechanism. Panels accordion across the opening horizontally, allowing the door to cover expansive spans — sometimes exceeding 50 feet in width, that would be impossible to protect with a standard swinging fire door.

These systems are typically:

• Automatically activated by fire alarm systems

• Available in both manual and automatic configurations

• Designed to compartmentalize large open floor plans

• Rated for fire and smoke protection compliance

• Used in occupies requiring wide opening protection

What Is a Traditional Fire Door System?  

Traditional fire door systems are the most widely recognized form of passive fire protection in commercial buildings. They are typically single or double-leaf swinging doors installed within a rated frame and hardware assembly.

Where Are Traditional Fire Doors Commonly Used?  

Traditional fire doors are found in:

• Stairwells and emergency egress corridors

• Mechanical and electrical rooms

• Compartmentalised office and healthcare environments

• Openings up to standard commercial door widths

• Areas requiring frequent daily pedestrian use

How Do Won-Door Accordion Doors Compare to Traditional Fire Doors?  

Both systems are designed to contain fire and smoke, but they serve different applications and environments.

Which System Covers Larger Openings More Effectively?  

For wide openings, Won-Door accordion systems have a clear advantage. Traditional fire doors are practical for standard-width openings but are not designed to cover the expansive spans common in auditoriums, gymnasiums, warehouses, and open-plan commercial spaces.

Can Traditional Fire Doors Replace Won-Door Systems in Large Openings?  

Not effectively. Attempting to cover a wide opening with multiple traditional fire doors creates complexity around hardware, coordination, and compliance. Won-Door systems are purpose-built for these situations and deliver a cleaner, more reliable solution.

Which System Is Easier to Integrate Into Daily Operations?  

Traditional fire doors are better suited for openings with frequent daily pedestrian traffic since they operate like standard doors under normal conditions. Won-Door accordion systems are designed to stay open during normal operations and only deploy when triggered by a fire alarm, making them well-suited for spaces that need to remain open and accessible day to day.

How Do Both Systems Meet Fire Code Requirements?  

Both Won-Door accordion doors and traditional fire door systems can be manufactured and installed to meet fire rating requirements, but compliance depends on correct specification and professional installation.

What Fire Ratings Are Available for Each System?  

• Won-Door accordion doors are available in ratings up to three hours

• Traditional fire doors are commonly rated at 20 minutes, 45 minutes, 60 minutes, and 90 minutes

• Both systems require listed frames, hardware, and installation to maintain their rating

• Regular inspection and maintenance are required to keep both systems compliant

Frequently Asked Questions (FAQs)  

What is a Won-Door accordion fire door used for?
Won-Door accordion fire doors are used to protect large openings in commercial and institutional facilities where traditional swinging fire doors are not a practical solution.

Are Won-Door systems more expensive than traditional fire doors?
Won-Door systems typically carry a higher upfront cost due to their size and complexity, but they are often the only compliant solution for wide openings, making them a necessary investment in those applications.

Choosing the Right Fire Door System for Your Facility  

Both Won-Door accordion doors and traditional fire door systems play an important role in passive fire protection. The right choice comes down to the size of the opening, the nature of the space, and the operational demands of the facility.

For expert guidance, supply, and installation of both Won-Door accordion fire doors and traditional fire door systems throughout California, Barr Commercial Door delivers code-compliant solutions tailored to the needs of commercial and industrial facilities.