PlasterCast™ Glass-Fiber Reinforced Gypsum Columns The comprehensive line of glass-fiber reinforced gypsum architectural columns and cornices from Melton Classics offers the construction professional durability, economy and superior design flexibility for commercial interiors. Manufactured from a completely non-combustible material, architectural columns, domes, mouldings, niches, light coves and vaults are just a few of the many interior architectural product options available from our large inventory of standard molds. These durable and lightweight GRG interior products from Melton Classics can be easily installed using conventional drywall tools, and are available for field finishing with smooth or textured finishes. Whether your design calls for flowing contemporary contours or crisp classical details PlasterCast™ architectural ornamentation will meet any commercial interior design criteria.