Sunpack 21"x11" 72-Cell Extra Strength Square Insert for Seed Starting, Black, 2.5"

Sunpack 72 cell extra strength insert square fits standard 1020 trays extra strength high-quality nursery flat inserts are made to last multiple seasons they will hold up when being transported while full of plants and media they will fit any standard 1020 10 x 20 tray the squares allow for healthy root growth and will keep your seeds healthier this tray is exactly what you need in your garden greenhouse give it a try