AC Infinity Humidity Dome, Germination Kit with Large Glossy Finish Clear Dome, Sturdy Drip Tray, and 6x12 Cell Seedling Tray, for Seed Starting,Features Domed plant tray designed to improve germination and cloning success inside a high humidity space. Clear, heavy duty 3mm thick dome with glossy finish allows light penetration and provides precise humidity control. Optional height extension panels with more adjustable vents raise the dome for propagation projects. Lightweight 6x12 seedling tray can support up to 72 seedlings and is built to drain excess water. Drip tray is durable, reusable,