This Zone Offroad 4-inch box kit for 1999–2004 Ford F-250/F-350 is offered with a square option and supplies the vehicle-specific components for that lift height. It’s intended to be used as part of the complete kit; select the square version when that profile matches the kit requirements and combine with the matching boxes and hardware to complete the installation.
Zone Offroad 99-04 Ford F-250/350 4in Box Kit w/ square