Queen Converter Rail System, Bolt-On with One Center Support This rail system lets you keep your full size headboard and footboard, and sleep on queen size bedding. This Converter Rail System is intended to be used with a headboard and footboard that bolt on to the rail system. The Center Support System features one width adjustable Cross Rail and a height adjustable leg (height adjusts from 7 1/4" up to 12-1/4") Retainer Brackets hold your Queen Size foundation unit securely in place. This bedframe is manufactured with pride in the United States. The materials and workmanship are backed by a Lifetime Limited Warranty. This bedframe is built to last over the long term under heavy use.