Excellent quality 7 inch tall propagation dome. Straight vertical sides allow use of all plant sites in a propagation tray. 2 clear vents in the top of the dome can be opened or closed to control humidity. Built in handle for easy removal. Fits snugly on a standard 10” x 20” propagation tray. Replacement vents are used to replace lost or broken vents on your NGW® propagation dome.