About Us

A Carefully Crafted Legacy

Located in Bloomer, Wisconsin, A.J. Manufacturing 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 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.

Honoring Our Past, Inspiring Our Future

Our story is unlike any other. Today, we continue to honor that history, created more than 50 years ago, while setting our sights on the future. We are always investing in new technology and innovations that will make your job easier and less stressful than ever before.

We’ve had a lot of fun since our early days, but we can promise you – the best is yet to come.