Kawneer's Trifab 451UT (Ultra Thermal) framing system for commercial façades is an upgrade of the company’s Trifab platform. The system employs a dual Isolock thermal break, increasing thermal performance without compromising structural performance. Available with screw spline construction and a center-aligned glass pane, Trifab 451UT features a high-performance sill design that incorporates a screw-applied end dam, ensuring positive engagement and tight joints. The system has 2" sightlines and a 4-1/2" frame depth, and it accommodates different color options with anodized and fluoropolymer painted finishes. kawneer.com