This Water Works Sand/Water Trough is a surface mount only for table heights: 28”, 23" or 18”. Components are made of specially formulated recycled HDPE plastic based materials that will not rot, crack, peel or splinter. Overall size 11‘3” x 24"W. The "High Density Polyethylene" is impervious to insects and bacteria; requires no maintenance; is non-toxic; and is unaffected by severe weather or direct sunlight. Easy to clean surfaces never require painting or sealing and are mold and mildew resistant. Paint, ink, and other substances will not permeate the plastic, which prevents permanent staining. Just clean with any standard cleaner or power wash for a bright crisp look for many years to come! Rust-proof Stainless Steel fasteners are used to insure long life and to maintain a beautiful appearance.