A.M.A. Plastics Ltd. Is offering a 72 Deep Tray that measures about 11 x 21½ inches and is designed to accept 30 mm x 75 mm Ellepots. The 76.5 mm (3-inch) deep tray features fluted cell walls for extra strength and better airflow, good drainage, top venting for air circulation and sturdy construction. The are particularly useful for plants that produce a taproot or prefer deep cells.