The Sproutmaster is packaged in singles, twos and threes and are stackable. Each package has an extra lid so that the unit may be used as a crisper. A handy kit to use to sprout your sprouting seeds. A great addition to your emergency food storage. Each tray is 10" x 8" x 2". Comes with three sprouting trays, 10" x 8" x 6.5" when all three trays are stacked.