The dreambaby gate 18cm extensionwill fit any standard height dreambaby saftey gate this easily attaches to gate and allows you more use of your gate in a variety of different sized openings through out your home this item is perfect if you have an odd sized doorway and if you cant find a standard sized gate to fit your doorway warning a maximum of two gate extensions can be used one on either side of the gate do not install two gate extensions on the same side of the gate