Flat trim moulding accents walls, cabinets, and more. Other versatile enhancements include window and door casings. The basic design of flat trim moulding accommodates a diverse range of projects, whether you are looking for a simple finishing touch or using the moulding as a base. Traditionally attractive, cost-effective and durable urethane moulding is precision molded and made with quality. Urethane is non-porous and highly resistant to the effects of moisture and water, so our urethane mouldings are perfect for use in both interior and exterior applications. Flat trim moulding is pre-primed. It can be easily trimmed and installed.