The patented pressure mount system on this Gateway to Go Portable Pressure Gate was rated number 1 by a leading consumer group. It's ideal for protecting little ones in temporary situations because it's easy to remove and install with no tools or hardware needed. The light 4.5 lb. gate is designed for openings 28 to 36" wide and stands 29" tall. Constructed of steel, nylon and mesh. Designed for use with children 2-1/2 years and older.