30 in. height gate and extension. Can be used at top of stairs. Gate automatically open, close and lock. Gate swing door opening 17.5 in. wide. Locking hand wheel and mounting cups. Maximum 3 extension total per gate recommended. Easy to install pressure mount and tension knob. Security latch with easy one hand operation. Two bar extension and adjustable to fit opening 29.5 - 38 in. wide and 30 in. height. Can used opening fit upto 125 in. wide with additional extension. Space between bars 2.25 in. wide. North States' gates and enclosures are engineered to provide the highest quality, durability, and ease of use. North States creates the most versatile and easy-to-use gates to fulfill any need. Whether you're guarding stairs, a fireplace, or just creating a safe play area, North States has what you need to keep your children safe and happy. Our gates are easy, and will fit in any home and in nearly any opening.