DESIGNED BY PILOTS, FOR PILOTS.
Save 10% on Quality Hangar Doors.
Upgrade your hangar with doors designed for seamless operation and years of reliability. As a bifold door manufacturer owned and operated by pilots, Diamond Door combines aviation insight with industrial-grade precision. We provide the dependable access your aircraft deserves. Complete our quote form today to receive a detailed, free price estimate.
Rooted in Aviation.
Diamond Doors began with founder Dick Suderman’s fascination with aviation and his decades of experience as a commercial pilot. What started as a simple passion has grown into a legacy passed down. Now led by a new generation of pilots, the Suderman family remains committed to the aviation community. We don’t just sell doors; we provide expert guidance and a lifetime of service, grounded in the values of the small-town community where we started.
Fill out the quote request form to get free and accurate pricing on your bifold door.
Our sales team will be in touch within 48 hours to finalize any details and make sure that your door is a perfect fit.
Can’t wait? Give us a call to get your pricing immediately.
A Diamond door is a great choice for your hangar.
Here’s a few reasons why.
Spend Less Time on Door Maintenance.
Designed with fewer moving parts and built from quality materials, you can expect to spend less time on maintenance with a Diamond bifold door. Instead, you can spend more time doing what you love. Diamond doors are low maintenance and reliable.
Trouble Free Door Operation.
A Diamond door makes it easier to access your hangar. Compared to sliding panel doors that are frequently difficult to move, bifold doors open at the push of a button. Add the remote opener and autolock package to make it even simpler.
Designed for Easy Installation.
We deliver your door directly to your hangar – pre-assembled and ready for installation. And if you need someone to handle the install for you, we have a wide network of great door installers across North America.
Door Features You’ll Love
Non-Overlapping Cable Lift System
We believe that lift cables are the more reliable choice for bi-fold doors. Our unique cable system eliminates the usual wear-and-tear of traditional cable systems and provides a longer lasting and safer opening system.
Remote Opener Package
The Diamond Doors remote opener package offers added convenience to an already convenient door package! Pairing the auto-lock with the remote system allows you to operate your bifold hangar door from the comfort of your cockpit.
Complete Insulation Package
Our insulation package helps you lower your energy bill and maintain a consistent interior temperature year around. As an added bonus, it’s quick and easy to install. It’s a simpler and more effective choice compared to other insulation options.
Polycarbonate Sheeting
Brighten the inside of your hangar with our polycarbonate sheeting option. It allows natural light into your hangar while still maintaining your privacy. It arrives cut-to-length and ready for easy installation.
When you call, somebody picks up the phone and they help you, and they get to the answer.
These Wisconsin Pilots Chose Diamond Doors for Their Aviation Hangars
For this group of five Wisconsin pilots, finding the right hangar door for their private hangars meant quality that lasts, offering them access to their airplanes without a headache. Choosing a Diamond door was the answer.
Marc Stamsta ordered his Diamond door in 2015, equipped with the autolock package, remote opener, and fully insulated to protect against the winter chill. He was pleasantly surprised by the price, but more important was the ease of access to his hangar.
Dan Coffey, another local pilot, adds that longevity was important too. “For the next 20 years too,” said Coffey, “without any headaches.”
“I wanted a door that would go up and down to facilitate me getting my airplane in and out when I wanted to,” said Stamsta.
Coffey ordered his door in 2017. Eight years later, he’s still pleased with its performance. Like Stamsta, he ordered his door with convenience in mind, choosing to include the autolock system and remote opener package.
Other factors that made the Diamond door an appealing choice? Larry Sullivan and John Semenske agree that the quality of the door and the design were key factors in their decision to purchase a bifold hangar door from Diamond Doors.
“For me, it was having some experience with a different door that constantly required adjustment and changes…” said Sullivan. “I said, there’s got to be something better, and then March had run into Diamond Doors.”
Semenske adds that “I looked at… every door out there, compared pricing, got quotes from everybody, and then looked at the quality and the type of door. I came to the conclusion… a Diamond door was the best door out there, and it was also the best value.”
Bill Schnell was happy with the speed of his 50’x13’ hangar door. “It’s a big thing. And also with the electrical engineering background – I like the wiring and the motors and the design.”
The technical features and quality door design were all highlights for this group of pilots. However, they also unanimously agreed that the best part of working with Diamond Doors was the accessibility and service from the sales team.
“When you call, somebody picks up the phone and they help you, and they get to the answer,” said Semenske.
He adds that “Serge was good too… I made him do a lot of work, but he was happy to do it and was always very nice to work with.”
Find out how a bifold door can add new life to your existing hangar, or make your new hangar stand out from the rest by talking with our sales team, or follow the button below to get quick and accurate pricing on your bifold door.
Faster transitions from hangar to runway.
Diamond Doors manufactures hangar doors built for convenient operation and low-maintenance reliability. Designed with fewer moving parts and built from quality materials, you can expect to spend less time on door maintenance, and more time doing what you love. Upgrade to a Diamond door for push-button operation and a door that you can trust.
Get a door you can rely on.
And 10% off.
Promotion applies to door orders placed between April 6 and May 15 2026. Shipping and taxes are excluded. This promotion is not valid with any other offer or discount. Applies to hangar doors only. Some conditions apply to specialty projects. Valid to USA residents only.