chair-rail molding specifications: – outstanding quality chair-rail molding made from high density polyurethane: environmentally friendly material is hypoallergenic and fully recyclable no CFC no PVC no formaldehyde; – front surface of this molding has extra durable and smooth surface; – chair-rail molding is pre-primed with water-based white paint; – lightweight durable and easy to install using common woodworking tools; – metal dies were used for consistent quality and perfect part to part match for hassle free installation; – this chair-rail molding has sharp deep and highly defined design; – matching flexible molding available; – chair-rail molding can be finished with any quality paints; Polyurethane is a high density material–it’s extremely lightweight and easy to install (and comes primed and ready to paint). It is a green material meaning its CFC and formaldehyde free. It is also moisture resistant–so it won’t shrink flex or mold. What’s also great about Polyurethane is that it’s completely customizable and can be treated as wood (you can saw it nail it screw it and sand it). In addition our polyurethane material comes primed and ready to paint. There is a four piece minimum requirement for this molding purchase.