20 Gauge Premium Grade 304 Stainless Steel with sand coating;It can be installed vertically & horizontally;Easy to install;Ready for tile;Slope on all sides;Waterproof;Features: Material: Stainless Steel Finish: Satin, Black Finish, Polished Assembly: Assembled 16-3/8 in. H x 3-7/8 in. W x 16-3/8 in. L