Seedling Tray, Wheatgrass Germination Container for Balconies and Terraces (4 Units) Note: This product page only sells the 4-piece set. If you need other sizes/colors, please refer to the Questions & Answers section. Description: Mini Greenhouse: This 12-hole seed starting tray is great for growing your plants at home. Material: The seed starting tray is made of PET material, ensuring the durability and longevity of the plant growing tray. Occasion: The plant growing tray is ideal for balconies, terraces, and windowsills. Adjustable Vents: Equipped with adjustable vents in the humidity dome, this seed starting kit allows you to regulate temperature and humidity levels for your seedlings. Application: The plant germination tray is good for potatoes, tomatoes, peppers, vegetables, fruits, flowers, and other plants. Specification: Material: PET Size Chart: 18.5cm x 14.5cm x 11.5cm / 7.28in x 5.71in x 4.53in Package Includes: 4 Seedling Trays, 10 Plant Labels, and 2 Mini Gardening Tools. Note: Please allow slight errors of 1-2cm / 0.39-0.79in due to manual measurement.