Aboveground Liners Standard Unibead Liner Patterns GLI Willow Creek 52′ & 54′ Unibead liner Doctor 20 year warranty 3 year full GLI Concord 52′ Unibead liner Doctor 25 year warranty 5 year full GLI Boulder River Rock 52′ Unibead liner Doctor 20 year limmited warranty GLI Golden Beach All Depths Round/Oval/Rectangle 20 year limited warranty Trevi Roma 52′ Unibead 20 year limmited warranty Overlap Liner Patterns Maui Blue Overlap Liner 20 year warranty limited 1 year full Blue Wall/Maui Blue Floor Overlap Liner 20 year warranty 1 year full Solid Blue Overlap Liner 20 year warranty 1 year full