The Upgraded 7 X 5 Cat Door Can Be Adjusted Left And Right In 3 Levels, Which Solves The Problem That Other Pet Gate With Cat Door Do Not Stay Locked In Place It Is Easy For Small Pets To Pass Through And Separate Pets Of Different Sizes Fits 29-43 Inch Openings, And The Width Of Puppy Gate Can Be Adjusted With The Included Extensions, Suitable For Stairs, Doorways, Hallways And 30 Inch Tall Make It Perfect For Toddlers And Medium Pet Simple And Quick Pressure Installation, Not Require Additional Tools And No Holes In The Wall It Is Equipped With An Auto-Close Feature That Gently Closes The Door And A Stay-Open Feature That Keeps It Open The Walk Through Dog Gate Can Be Opened Easily With One-Hand Operation Even While Holding A Baby Our Baby Gate For Stairs Made Of High-Quality Steel Material Can Withstand Up To 210 Lbs Of Heavy Impact You Dont Need To Worry About This Dog Gate Being Pushed Down Double Lock Design Makes It Difficult For Kids To Open, But Easy For Adults