This 72 cell seedling module is ideal for planting your seeds in, and keeping your plants seperate from the start. It saves time in that young seedlings don't have to be transplanted from an open tray to small pots. It also gives seedlings more space and time to grow without the disruption of being transplanted when very young. Each seedling module cell has enough room for a single plant to develop to the stage where it is ready to be transplanted to the garden, or into a bigger pot. These trays are 1mm thick plastic. If handled with care, they could last for a number of seasons. Full lenght: 50cm Full Width: 25cm Cell Size: 38mm x 38mm Compatibility With Other Trays These trays are only compatible with the below trays. Propagation Trays For Seed Starting or Microgreens WITHOUT Holes Propagation Trays For Seed Starting or Microgreens WITH Holes Deep 1020 Bootstrap Farmer Trays | Without Holes Deep 1020 Bootstrap Farmer Trays | With Holes 1020 Mesh Seed Tray