Stainless Steel Tile Insert Small Floor Waste - You tile inside the drain. Drain is "hidden". 4.52 inches (115mm) x 4.52(115mm) x 0.78 inches (20mm) Deep with choice of outlet Full Stainless Steel - Made from 304 Stainless Steel - base and top. Fully Welded. We supply you drain base with outlet of your choice + stainless steel top.