20 count MESH 10" x 20" TRAYS SEED STARTING NURSERY FLATS Trays measure approx. 10 1/2" x 20 1/2'" x 2 3/8" deep. Perfect for bottom watering Each tray holds 50 2" square pots Each tray holds olds 36 2-1/4" square pots Each tray holds olds 18 3-1/2" square pots