The Ariens Company 30125200 Lawn Mower Rear Door helps improve safety and clipping control for compatible Ariens walk-behind lawn mowers. It works by covering the rear discharge opening, directing grass clippings toward the bagging system while helping prevent debris from being thrown toward the operator during use. Made to replace a worn, bent, cracked, or missing rear door, it helps... https://www.wholetoolbox.com/ariens-company-30125200-lawn-mower-door-rear/30125200.html