SavHome 302212 14-Foot X 14-Foot PVC Pond Liner, Black Sunterra PVC pond liners contain the water in a pond while providing the ability to create pools, streams and waterfalls PVC pond liners are flexible and easy to transport Measures 14' x 14' with a thickness of 20 mils Has a 15 Year Limited Warranty This liner has a raised texture that provides a home for helpful bacteria to colonize for a healthier pond.