Hell in a Cell is a professional wrestling cage-based match held in WWE (formerly World Wrestling Federation). It features a large roofed steel cage structure or "cell" which encloses the ring and ringside area. While similar to the steel cage match in profile and structure, unlike the steel cage match wherein exiting over the cage results in a win, only executing a pinfall or submission will result in a win. As in a steel cage match, disqualifications do not apply. The original Cell was 16 ft (4.9 m) high and weighed over two tons but has since been replaced by an amplified version of 20 ft (6.1 m) and five tons. Thirty three Hell in a Cell matches have taken place in WWE since its inception in October 1997.