Located in Bloomer, Wisconsin, A.J. Manufacturing, Inc. has created an environment of continuous improvement, unmatched innovation, on-time delivery and highest-quality goods. 

As a customer-driven, niche marketer of innovative insulated door products, A.J. Manufacturing, Inc. was formed with a goal of making the company a premier specialty insulated door manufacturer.

While the company, which was founded in the late 1960s, had always produced high-quality insulated doors and windows, a drive for discovering new markets and innovations was impossible to ignore.

Today, we are your partner in high-quality HVAC and post-frame products.

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Post frame doors and windows

Our post frame doors and windows don’t just meet standards, they exceed them. Made with thicker steel, heavier hinges and a higher level of galvanization and paint, our products stand the test of time without rusting, warping, fading or failing. With a wide variety of options, from consumer to utility and commercial-grade, you’ll find the perfect door or window for your project at the right price.

Learn more about our post frame solutions.

Browse our post frame catalog.

HVAC

At A.J. Manufacturing, Inc., we’ve been your partner in innovation for more than 50 years, and we’re not stopping now. We’re your dynamic and creative go-to team, forever dedicated to impeccable service and quality. When you work with A.J. Manufacturing, Inc., you can expect fast quotes, quick turnaround times, and continuous communication, no matter what.

When designing and manufacturing our products, no part or detail is too small. With unmatched precision and extreme attention to detail, we carefully craft products that will last you years to come, with less time, money and stress spent on repairs.

Learn more about our HVAC solutions.

Browse our HVAC catalog.

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Connect with a sales representative

Our sales representatives are the best in the biz, and they’re standing by ready to help you. Because we know you’re on a timeline, we will get you a quote within 24 hours. Find your rep and get started! HVAC and Post Frame sales reps available across the U.S! 

Find your representative today!

Latest Podcasts

Todd Carlson - Doors, Details & Durability

In this MetalCast™ episode, Karen Edwards is joined by A.J. Manufacturing Inc.’s President, Todd Carlson, to introduce the Wisconsin-based company with over 50 years of experience crafting insulated doors and windows for the metal construction industry. From post-frame buildings to high-performance HVAC applications, A.J. Manufacturing Inc. is a trusted partner ...
Listen to the Podcast