The Shelving System 2 Level Work Bench is perfectly sized to fit inside all of Palram hobby greenhouses and will help you create a well organized growing space. The bench tops are 19 5/8" x 45 1/4" each. It will keep your plants off the ground while increasing the capacity of your greenhouse. The galvanized steel construction is designed for the tough greenhouse environment while the smooth surfaces allow for quick and easy clean up. The Shelving System comes complete with hardware, instructions and is easy to assemble.