Speedlings are our best selling transplant containers. Reusable polystyrene tray with individualized pyramid shaped cells which virtually eliminate transplant shock. Advantages: * undamaged roots (plants and all the soil pop out cleanly); * no tearing or entangled roots, no spreading of root pests or diseases; * a better root system (when the bottom of the tray is exposed to air, the taproot is air pruned promoting the growth of feeder roots that are directed downward instead of spiraling around the cell, enabling the plant to begin growing immediately after transplanting); * reduced damping off (due to excellent drainage). In addition, 95% (minimum) of Speedling transplants survive in the field. Trays are reusable for many years, and you can extend their lifespan with inserts. For more about growing with Speedlings, see the Product Use Information link below. Note: all trays are 26-5-8 x 13-5-8 overall with slight variance on the height. This 242 cell tray has 200 cells that are 1 square x 3 deep The 128 cell tray has 128 cells that are 1-1/4 square x 2.5 deep This 72 cell tray has 72 cells that are 2 square x 3 deep. Shipping Dimensions: 26.625 x 13.125 x 2.5 inches Shipping Weight: 1.2 pounds Product Use Instructions: http://wp.me/P40sS5-oO Up to 3 trays can be shipped in the same box for the same rate