Our premium liners are constructed of Standard and Heavy Gauge vinyl, ourliners will last longer and maintain their beautiful appearance foryears. Strong, double-welded seams will withstand winter? worst.Our liners are so rugged; they are backed by a 15-Year Warranty on Standard gauge liners and a 25-Year Warranty on theHeavy gauge. All of the flat-bottom liners listed below will fit either a 48?or 52?sidewall. Available in 5 vibrant colors/styles.