A Carefully Crafted Legacy

Located in Bloomer, Wisconsin, AJ 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, AJ 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.