Select from 20-row seed flats, pro-tray cell flats, plug flats, and jumbo plug flats. Browse cell plug flats in a variety of sizes to accommodate a range of crops. All of our products follow industry 1020 standard (actual footprint: 11" x 21"). The smaller the number of cells in a flat, the larger each cell is in size: 24–50 cells are good for larger seeds, whereas 200–288 cells are good for tiny seeds. Available in small and case quantities. To compare products, including compatibility across products, see our Trays, Domes & Flats Comparison Chart (at right).