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Agriculture
Aviation
Industrial
Industries we serve
One door system, built for the way you work.
Agricultural
Wide, clear openings for machine sheds, barns, and quonsets, so equipment moves in and out with ease.
Learn moreAviation
Hangar doors designed by pilots, for pilots. Open at the push of a button with low maintenance for years to come.
Learn moreIndustrial
Large openings for shops, warehouses, and commercial buildings, with a tubular steel frame made for heavy daily use.
Learn moreWhat our customers say
Farmers, pilots, and business owners across North America trust Diamond Doors.

FEATURES & OPTIONS
Doors for Large Openings
Are you looking for a commercial door with maximum headroom? Need a cost effective large door solution? A Diamond bifold door gives you just that. Our self-supporting header allows the door to be installed past the roofline, giving you the most overhead room possible. Our quality doors have many features and options, all for a competitive price. Explore our bifold door features and options to learn more.
Why Diamond Doors
Quality custom bi-fold doors engineered for convenience, innovation, and longevity.
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Autolock system
Our locking system is engineered specifically for bi-fold doors, not adapted from a generic design. It locks and unlocks automatically, so the door opens and closes with the push of a button and stays secure when closed.
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Aircraft grade lift cables
We lift with aircraft grade steel cables rated at a 10X safety factor. Unlike straps, steel cable won’t stretch, fray, or break down in sun and cold, so the door stays balanced and lifts evenly for years.
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Low maintenance
Greaseless, maintenance-free hinges and fewer moving parts mean no regular servicing, so your door is a tool that makes life easier, not another piece of equipment to look after.
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Maximum headroom
Our self-supporting header lets the door install past the roofline, giving you the most overhead room possible. It also suits retrofits on existing buildings, including quonsets and mitered corners.
- 1998Building doors since
- 10XCable safety factor
- 4–6 wksLead times
Commercial bi-fold door solutions
Installed on the outside of the building and custom sized to virtually any opening, our doors handle structural loads, overhead cranes, and changing weather.
Agriculture
Industrial
Commercial Bi-fold Door Solutions
Our bi-folding overhead garage doors can provide large clear openings for many commercial building types. Installed to the outside of the building, our door system can be designed to fit virtually any size opening. The door can accommodate for a variety of challenges like structural support, overhead cranes, and variations in weather. A versatile and high quality industrial door solution.
Explore Door Applications
Case Studies
Our customers tell it best
See how Diamond bifold doors are working on farms, hangars, and shops across Canada and the USA.
View All Stories-
Agriculture
Frank’s Farm Story
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Aviation
Why These Wisconsin Pilots Chose Diamond Doors
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Industrial
Maverick Industries Welding Shop
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Aviation
AirVentures Trip Leads to a New Retrofit Bifold Door
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Agriculture
Nebraska Farmer Chooses a Bifold for His Farm Shop Door
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Industrial
Public Works Building Surrey, BC
Doors Across North America
Diamond Doors is a Canadian commercial bifold door manufacturer located in Winkler, Manitoba, founded by a former commercial pilot and located in the heart of an agricultural community. We are committed to creating exceptional products, never sacrificing quality, and setting the bar for bi-fold door manufacturing. We ship bi-fold doors across the United States and Canada and have been a trusted name since 1998.
Diamond Door Installation
Installation with a Diamond Doors is fast and efficient, with pre-assembled components that reduce on-site labour and setup time. Each system is factory-tested and includes all necessary hardware, allowing for quick, reliable installation.

Find a Dealer
Our trusted dealers and installers across North America can help with sales, installation, and service in your area.
Find a DealerBecome a Dealer
Grow your business with a family-owned manufacturer that supports its dealers, installers, and service professionals.
Become a Dealer