Each Gate Fits Openings from 28-32.5 inches with Included Extensions up to 36 inches. Height is 39.4 Inches. Extends up to 53.5 inches using optional extensions. Includes Two Extensions Each 3 1/2 inches One for Each Gate. Suitable for Hallways, Stairs and Wide Doorways. Each Gate Swings Closed Automatically. One Handed Operation for adults. Great for Pets. Additional Extensions Sold Separately. Maximum One Extension on Each Side.