Child safety gate for 96-101 cm width: the safety gate fits with the included 21 cm extension in openings from 96 to 101 cm - please measure opening width accurately before purchase Easy to open with one hand: the door safety gate can be opened in both directions and also closed again - convenient and safe in everyday life - easily lift the door and push back the safety lock Quick assembly: the installation is done by clamping with 4 adjusting screws (5 cm clearance) - without drill holes; the screws and wall plates are included; not suitable for round railings Expandable: with a 2nd Extension (9 or 21 cm) on the other side, the child lock is expandable for wider openings; for round stair railings, the hauck Y-spindle is required Important: the side panel is crooked when unpacking - this is normal and not a quality defect; by tightening the four adjusting screws, the baby gate is automatically pulled straight