The SUNDOME® 7.5-inch humidity dome is ideal for rooting large cuttings and/or growing cuttings to large size after rooting, but also useful for seed germination, early seedling growth, and propagating smaller cuttings. It allows the grower to adjust the humidity levels to best suit the stage of growth using its four adjustable vents. The clear, high quality BPA-free food-grade plastic makes it easy to see the plants and observe their growth. It's standard size is compatible with 10in x 20in trays and SUNPACK® heat mats.