Free-standing wire rack has 18-5" pins and 72-3" pins to accommodate up to 90 test tubes, beakers, flasks, etc. Black vinyl coating cushions glassware. Rust-resistant back plate and special trough catch dripping water to keep your benchtop clean and dry. Trough is removable for draining and cleaning. Use rack standing up on the bench top or wall mount (hardware not included). Overall dimensions: 18 1/2W x 19H x 7 1/8D".