Flat trim moulding is a versatile addition to window and door casings, but it can also be easily trimmed and included in a variety of improvement projects. Flat trim moulding is crafted in urethane, and when finished, it performs exceptionally well in both interior and exterior applications. This basic moulding is crafted with precision and durable in form. Urethane has a closed cell structure, which prevents damage caused by moisture absorption. Consider versatile urethane as an alternative to wood millwork. It will not warp, crack, decay or offer a food source to insects. Flat trim moulding is also factory-finished in a durable primer and ready for painting.