Homeowners, these QCAA storm door chains are simple but effective security upgrades! Each heavy-duty steel chain measures 30 inches long, which is perfect for standard 42-inch wide doors (use the 25.5 inch version for 36-inch doors). The package includes all the mounting hardware you need for easy installation - just screw it into your door frame and you're good to go. Made with quality materials and manufactured in Taiwan, these chains provide that extra layer of security while still allowing you to partially open your door to see who's outside or get some fresh air. The 2-pack means you can secure multiple doors around your house or have a spare on hand. Perfect for front doors, back doors, or even apartment doors where you want some added security without installing a full security system. The steel construction is durable and should hold up well over time. Installation is straightforward - most people can handle it with just a screwdriver. It's one of those simple, affordable security measures that give you peace of mind, especially if you live in an area where you want to be able to check who's at the door before fully opening it. The chains are strong enough to prevent forced entry while still being easy to use daily.