Manufactured 100% in the USA, TrimJoist’s patented, trimmable open-web floor joist system combines the trimmability of an I-joist with the open-web flexibility today’s trades demand.

Trusted by architects, engineers, and builders for over 30 years, Trimjoist continues to move floor framing forward with a system that delivers longer spans, greater jobsite flexibility, and dependable strength in one streamlined product.