The Monticello MONT-20-WB 8 ft. x 20 ft. Work Bench System is specifically designed for the Monticello line of 20 ft. greenhouses and can be installed at initial construction or at a later time. This greenhouse work bench system includes a full, 20-ft. run (24 in. deep) for use on either side of the Monticello greenhouse. Since the installation of the support bars uses the inside bolt tracks, the shelving could be set at any height within the greenhouse up to 4 feet off the ground for versatile placement. Constructed from high-impact PVC, the vented shelving system is made to last and allows air and sunlight to reach underneath the work bench.