Suitable for doors that open to the left or right. Door frames and doors should be parallel. If the door frame is higher than the door, you need to use wood blocks or other materials to raise the bracket and parallel to the door frame. Door weight: 44-88 lbs, door width 44.1-88.2 lbs: 39.370 in, door opening angle up to 150°. Suitable for home, office, hotel room doors, etc. For indoor use. Measure doors before ordering