The Royal Undersill Finish Trim in White is a premium vinyl trim accessory designed to provide a clean, finished transition between vertical wall surfaces and horizontal siding panels. Engineered for use at the underside of windows, doors, and other openings, this undersill trim helps create a polished, professional look while supporting proper siding alignment and water shedding.
Constructed from durable, fade-resistant vinyl, this trim piece resists cracking, peeling, and weather damage, ensuring a long-lasting finish that complements most siding and exterior trim palettes.
Product Code: MFT
Finish: Matte
Length: 12' 6"
Face Height: 3/4"
Pieces/Ctn.: 40