Four Palram heavy duty aluminum shelves are designed to fit all Palram Mythos, Hybrid, Essence, Snap & Grow, Glory, Americana and Chalet greenhouses. Each shelf measures 23" x 16½" and can hold up to 90 lbs of plants, watering cans, soils and other greenhouse necessities. The heavy duty steel support brackets attach securely to Palram frame profiles and can be easily repositioned wherever space is needed. Shelves can be mounted individually or in tandem for optimal efficiency. Each shelf kit Includes mounting hardware and 3 plant hangers that can be affixed to the shelf undersides for plant baskets and trellising.