SmartLine Caribbean 28-Foot Round Liner | Overlap Style | 48-to-52-Inch Wall Height | 25 Gauge Virgin Vinyl | Designed for Steel Sided Above-Ground Swimming Pools | Universal Gasket Kit Included Will work with 52 inch wall height The high temperature curing, computer controlled process insures that 100% of the material is Vulcanized to the highest possible tolerances. Vacuum Sealing, high volume air pumps combined with electronic air filter remove all impurities before bonding. Lap welded seams, unlike butt-welded seams; reduce both lateral and vertical tension. Universal Gasket Set&reg; includes gaskets for your pool's wall skimmer and return. The skimmer gasket will work with either standard size skimmers or wide mouth skimmers. Instructions included. gauge liners are backed by a 20 year limited warranty. 25 ga