Crossbars are easy to install and remove. Adjusts between 36"" and 72"". Crossbars come with extensions that will accommodate a KING SIZE BED. Rail length can be adjusted without tools to 37"", 43"" or 57"" long. Fits all home style beds. Easily adjusts up or down with spring-loaded release. Attractive brown vein finish. Constructed of 1"" steel. Fits all home style beds. Limited Lifetime Warranty," Case Pack 1