Dreambaby f160w hallway and stair gate will easily fit to any flat and stable surface within the measurements of the gate with extra large 11cm extending screwing barrels you can fit any wide frame between 71cm 82cmwith extensions the f160b will reach and fit up to 111cm and will still fit comfortably against a flat surface the door on the f160b will swing open smoothly and click back into place with a child proof lockthe gate itself has a double locking mechanism built into the a handle whi