Dreambaby Hallway Gates are for openings between 97-108cm (38.1-42.5"). They help keep your children out of household danger zones and allow you to enjoy the confidence that comes with knowing curious toddlers can't get into mischief. They are a perfect way to add safety and security to your childproof home. Measure the opening before deciding on the right safety gate. A maximum of two extensions can be used to extend openings up to 308cm (121"). Simply attach the extension to your gate before installing. Block off areas of your home rather than having to move potentially dangerous objects out of reach. Too high for even the most highly spirited children to climb over and too difficult for them to open. It's so much easier to use a gate than to hide every possible dangerous object out of reach - you can have the safety, without the stress! Gates are perfect for hallways, doorways, and stairways, preventing your children from entering potentially dangerous areas of the home.