HOME SAFETY: Dreambaby Inward Window Lock helps limit the opening width & helps keep your children safe and prevents them from slamming their fingers or falling. PERFECT FOR MULTI-STOREY HOMES & APARTMENTS: Window safety is one of the most important parts of childproofing your home especially if you are living in a high level of a building EASY TO INSTALL: Our Window Latches are a great addition to your home safety checklist and are easy to install with the included installation template and screws. FITS MOST INWARD WINDOWS: Dreambaby Inward Latch can be easily fitted to most inward opening windows including wooden frames ADJUSTABLE WIDTH OPENING: Our Inward window locks can be adjusted from 0-100 mm, there are multiple stops between 0-100 mm so you can set according to your desired width.