Solar Sun Rings for 21' Round A-G Pools 9 Solar Rings SSRA0021 may be used on all chlorine or salt water system pools, whether above ground. Solar Sun Rings for 21' Round A/G Pools - 9 Solar Rings are a passive solar swimming pool heating device made from two sheets of heavyweight U.V. resistant vinyl. The blue layer absorbs about 50% of the sunlight and converts it to heat. The balance of the sunlight is allowed to pass through for deep water heating.
- Above ground pools
- Solar Sun Rings are now approved by Smart Approved WaterMark Scheme
- Each Solar Sun Ring captures up to 26300kJ per day
- A must have, if you have any other form of heating
- Safer than traditional floating poly & bubble blankets
- 9 Solar Rings
- For 21' Round A/G Pools