Vanguard Mosaics Nieve Azul Celeste is a 12" x 18" mosaic from Centura's Vanguard Mosaics range. Floor and wall use are both covered, useful where a feature wall and the floor beneath it need to match exactly. One box contains 14 pieces, enough for 21.87 sq ft, or 1.5621 sq ft a piece. Being mesh-mounted, the sheet holds its spacing as it goes up and trims down to meet a corner or niche.