Preformed Flexform Liner Pond - Chesapeake - 163 Gallons by NurseryPro A flexible preformed pond thats easy to transport and install. All the durability of a plastic preformed pond with the flexibility of a liner. 67 length X 47 Width X 18.6 deep (163 Gallons). Safe for fish and Plants! Easily transported by folding the flexible preformed liner into a box.