Fypon 36 in. Inside Width x 22 in. Inside Height x 1-3/4 in. Polyurethane Decorative Half Round Arch Trim AR36X4M - The Home Depot

Vinyl beads and trims are designed to provide superior, long lasting interior finishes for drywall and veneer plaster. These beads and trims are used to provide durable, corrosion- and impact-resistant edges, corners, arches, curvatures and numerous finishing applications. Vinyl beads and trims continue to grow in popularity because they give architects, interior designers, and contractors much more flexibility to create dramatic, sweeping arches, curvatures and distinctive architectural details. Vinyl archway corner bead form fits almost any arch, curve or radius to provide rigid corner and edge protection. The notched single flange adapts to virtually any radius condition. Multiple perforations along flanges and notches enhance compound and veneer plaster bonding. In addition to nail or staple fastening, an adhesive should be used to secure arch tabs to gypsum board