This basic moulding becomes a flexible addition to projects ranging from simple to ornate. Whether you are creasing a simple casing for a wall panel or enriching a larger moulding profile, flat trim moulding offers ease of installation and durability. Flat trim moulding is molded in high-density polyurethane foam. Urethane trim products offer classic styling and the high performance of this modern polymer. Urethane trim is lightweight, but rigid and strong. It is also non-porous, so it will not warp, crack or decay. Urethane trim is also factory-primed, so it can be finished immediately.