Simple but dramatic, the Glass Black subway wall tile adds dark sheen and glamour to every space it's used in. Polished to a glossy, opaque finish, this thick 3" x 6" glass tile presents a smooth, reflective surface, bringing light as well as depth to walls. As upping the drama with dark colors becomes more common, this tile is versatile enough for backsplashes, showers, kitchens and bathrooms.