This gate locks shut with just a simple push and the gate can be used at the top of stairs, bottom of stairs, or between rooms. The double-locking system on the handle is easy for adults to use, but difficult for a child. An optional third lock at base of gate offers added safety. The steel U-shaped powerframe keeps gate securely in place. The extra-wide 21 1/2 walkthrough allows for easy in and out access, and extends up to 40 1/2". Measures 30 1/2" H. Designed for children 6 - 24 months.