?If you got 18pcs with holes, please contact with us, we will send you another 18pcs without holes for free? 18 Packs 21.6 x 11.2 big size, with height 2.36, Black Microgreens Trays are perfect seeds starter trays for seedlings, plant germination, hydroponics, for greenhouse, garden nursery Factory Direct Whole PS Plastic Trays Made of brand new PS plastic material, biodegradable, self-absorbent, black plastic propagation tray is 1.5mm thickness be reused for several seasons. This Mricrogreen Trays is actually bigger than 1020 trays if you use it for plant seedling, it is good to suit for carrying 1020 plugs which is too soft to bear itself with soil. There are no drainage holes on the bottom, these plastic grow trays no holes will keep as much as possible water and nutrients for the growth of your plants. Why 18 pieces per pack, because we need to save cost while we can use high cost material to produce. Loose packing makes the seperation of packing easy, no piece will be damage during your seperation of trays. Using the plastic growing tray as a planter to hold many kinds of plants, which keeps them orderly and no mess on the tables. Our 1020 trays is sturdy to hold! BASIC INFORMATION: Material: PS, Polystyrene Size: 21.6 x 11.2x 2.36 inches,Outer size Color: Black trays Quantity: 18 x 1020 Microgreens Trays You are always welcome to contact us at any time, we will do our best to serve you, thank you!