Our extensive selection of urethane millwork includes flat trim moulding. Accent doors, windows, walls, and more with this basic moulding strip. It installs easily for great results, whether you are planning something grand or simple. At Architectural Depot, the possibilities for enriching your surroundings are many, and our urethane mouldings offer beautiful and cost-effective solutions. Flat trim moulding is precision molded in urethane. This high-density, non-porous material offers a high-performance alternative to traditional wood millwork. Urethane mouldings resist the warping, splintering and decay that can plague wood mouldings. Flat trim moulding is factory-primed and ready for finishing.