The babydan danamic can be installed with extensions in openings up to 100cm a built in safety indicator shows clearly if the safety gate has been mounted correctly danamic is a true pressure fit safety gate no drilling or screwing required this avoids marks in your wall or door frame when you remove the gate the gate has a two way opening and adults can open with one handfeaturesbuilt in safety indicatorfits openings up to 100cm no drilling or screwing requiredtwo way opening can be op