Use the Viagrow Plastic Propagation Domes with a standard 10 in. x 20 in. propagation tray flat. Tall Domes are 7 in. tall and perfect for larger cuttings & seedlings. Tall propagation domes create a humid and warm environment for general propagation, clones, and seed germination. Viagrow 7 in. domes come with adjustable vents to control heat and humidity with a built in handle for easy removal. As a general guideline seedling and clones enjoy temperatures of 70-80 degrees and a humidity range of 50%-60%; please be sure to research your particular plant as temperature and humidity requirements will vary during propagation for different plants. This is a 50 pack of propagation domes.