The CargoBuckle Flush Mount System enables the CargoBuckle to be instantly ready when you need it, but neatly tucked out of the way when you don't. To use, simply open the "trap door" and the CargoBuckle hinges up to the ready position.Features and Benefits: Includes Template for cutting 5-1/2" x 9-1/4" hole. All attaching hardware included. Depth: 4.5". Break Strength: 3,500 lbs. Working Load Limit: 1,167 lbs. Mounting holes on 5-3/8" x 6-1/2" centers. Extends to 6'. Includes protective casing to protect ratchet in stored position.System contains: 1 Retractable Ratchet Tie Down, 1 Flush Mount Kit, Hardware.