Ideal for seed germination, early seedling growth, and cuttings propagation, the SunDome 2in humidity dome allows the grower to adjust the humidity levels to best suit the stage of growth using two adjustable vents on top. The clear, high-quality BPA-free food grade plastic makes it easy to see the plants and observe their growth. It’s standard size and compatible with our 10in x 20in trays and heat mats as well as all others of that size.