<p>Heavy Duty 10 x 20 Flat Tray without holes, perfectly fits most 2 inch 4 inch and 7 inch high Propagation Humidity Domes and Seedling Tray Inserts or Plug Inserts as well as 1020 Seedling Heat Mats on U.S. and CAN market. </p> <p>12 pieces per pack and with 12 pieces colored mini stake flags (plant label tags) for easy identification.</p> <p>HortiPots will continue offering more indoor gardening supplies and germination accessories for the market </p>