#LI214820
Swimline 21' Round Solid Blue 48"-52" Overlap 20GA Liner
The Solid Blue Above Ground Vinyl Liners are constructed of super strength, 100% virgin vinyl and have a lap seam construction. They are protected against chemical and/or UV fading, resistant to sunlight, bacteria, and fungus. They feature the best cold crack resistance in the industry. Computer designed and cut for a perfect fit each and every time, all liners are custom built and must pass a "Zero Defect" quality assurance testing.
Above Ground Liner Thickness Information
Above ground pool liner thickness is commonly measured in 'gauge' whereas the thickness of many inground pool liners are measured in 'mil'. Please see the chart below to see how the liner thickness in gauge compares to the thickness in mil.
| Liner Thickness in GA (gauge) | Liner Thickness in MIL (approximate) |
| 20 GA | 12 MIL |
| 25 GA | 15 MIL |
| 30 GA | 20 MIL |
| 35 GA | 25 MIL |
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