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he Solar Sun Ring is a passive solar swimming pool heating device made from two sheets of heavyweight U.V. resistant vinyl. The upper clear layer holds insulating air and focuses sunlight on the blue colored lower layer.

This entry was posted on Thursday, January 31st, 2008 at 10:25 am and is filed under Above Ground Pools Advice. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.