4-INCH DOME CLOSURE - The seed growing kit comes with a 4-inch enclosure/dome, which can greatly impact the size of your plants. The taller height allows for more space for roots to grow, resulting in healthier and bigger plants.2 ADJUSTABLE VENTS - Our seeding kit comes with two adjustable vents to easily regulate the climate inside, ensuring that your seeds get the perfect conditions for germination. In addition, the vents help to prevent condensation buildup, which can lead to improper growth and damping off.FITS 12 Oz STANDARD CUPS - We offer plant starter trays that can accommodate 12 standard 12 oz plastic cups. This tray is ideal for starting new seedlings or for rooting cuttings. It ensures proper drainage, and it is made from durable material to provide your plants with the optimal environment and ensure a healthy start to their life cycle.CLEAR DESIGN - The seedling tray includes a premium-grade clear cover which makes it easy to observe your plants without interrupting the process. The results might even encourage your friends and family to start their own mini-green thumb journey.SUITABLE FOR LARGE SEEDS - These plant trays for seedlings have 1.5-inch square cells, which provides plenty of room for your larger seeds such as potatoes, tomatoes, peppers, eggplants, and others to germinate and grow. It also promotes root growth, and the soil stays moist longer, which is ideal for the seed-growing process. Tarli Pack of 6 Plant Germination Kit - 4" Dome Closure Seed Starter Tray, 2 Adjustable Vents Attached - Suitable for Large Seeds