FLEX STACK PACK™ Wall-Mount Rail, 2-Pack lets you easily mount your STACK PACK™ storage items to the wall of your trailer, garage, or workshop. Designed with a 16-on-center layout, it fits walls with standard 16-inch spacing ly, eliminating any guesswork during installation. This wall-mount rail enables a quick transition of your STACK PACK™ setup from transport mode to a secure wall-mounted position in seconds, all without the need for tools (note that FS1505-4 Mounting Brackets are required and sold separately). Compatible with a wide variety of STACK PACK™ items, this rail provides a versatile and efficient storage solution that helps keep your space organized and accessible. Model Number: FS1503-2