Four ventilation holes on the top, that can adjust the temperature and humidity of the inner planting tray at any time. Besides, you can control it according to different plants and different environments. Drainage hole at the bottom of each grid, which can properly ventilate and drain, reduce the over-saturation of the root system and increase the germination rate and survival rate of the plant. It is an ideal choice for planting. Made of high quality plastic material, it is environmentally friendly and durable. The length of the plant starting tray is 8.5cm, width is 14.5cm, height is 11cm. The tray is suitable for planting fruits, flowers, potatoes, tomatoes, eggplants and other plants and vegetables. Item Name: Plant Starter Tray Material:Plastic Size Details: Size: 18.5cm x 14.5cm x 11cm(Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 X Plant Starting Box