Super Sprouter® Quad Thick Tray 10 x 20 reusable trays are built tough for long-lasting durability with four times the thickness of regular 10 x 20 trays. These trays are injection molded where most 10 x 20 trays are vacuum formed. No need to use multiple trays to gain strength when one Quad Thick Tray will do the trick. The tray insert has a perforated bottom for easy drainage.