Product OverviewFREE SHIPPING IN THE LOWER 48.Highway Products Inc., established in 1980, built its reputation by manufacturing the toughest semi truck and trailer toolboxes and accessories on the highway. We know that chaining up is not the favorite job of truckers, so we've made it a little easier with our patented Gull Wing chain hanger (U.S. Patent 6,371,344 B1)Highway Products gives you a better choice of places to install a chain hanger. Almost zero clearance (only 5"!) is required to use this hanger?it works very well with trucks that have ferrings which offer no frontal access. It's also desirable when it must be installed under the cab, flatbed, drom deck or where the trailer overhang is unavoidable. The lids open to the sides, swinging up and out of the way to access your tire chains. It holds two triple and two single sets of tire chains and works well in sets, placing one on each side of the truck.