Paperpot Germination Trays are an essential component of the Paperpot system. They provide structure for the paper chain pots during seeding while allowing drainage via bottom holes. Germination Trays are more durable and long-lasting than other brands of thinner-walled germination trays. They are nearly unbreakable and should last a lifetime. These trays are great for growing microgreens and wheatgrass. Made of recycled plastic. Dimensions which are different than standard 10/20 nursery trays = Inside dimensions – 23-1/8” x 11 x 1- 1/4″ and Outside dimensions – 24-1/16″ x 12″ x 1-3/8″. Available in 10, 20 or 40 pack.