Creates an organized growing space. Fits perfectly inside the Palram Hobby Greenhouse. 2 shelves gives you ample room. Limited 5 year warranty. Measures 20D x 45.5W x 32H inches. Create a well-organized growing space inside your Palram Hobby Greenhouse with the Palram Shelving System - 2 Level. Designed to fit perfectly inside your Palram Hobby Greenhouse, this unit features two shelves and can be used as a work station, a place to store equipment, or as extra space for your plants.