Thermory Benchmark Ash Cladding 5/4×4 C72 (JEM) features a fluted profile, adding architectural depth and a modern, dimensional look to any facade. It offers hidden screw installation for clean, fastener-free sightlines, plus JEM (Joint End Matched) ends that eliminate the need for joints to land on framing members—reducing material waste, labor time, and layout constraints. The thermally modified ash delivers proven rot resistance, dimensional stability, and durability without chemical treatment, backed by third-party testing data.