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Amazon.com : CosySpa Thermal Hot Tub Cover - 3X Sizes / 2X Shapes (Round & Octagonal) | Double Layered Insulated Hot Tub Cover - Save 30% Your Energy Bills | Hot Tub
Spa Covers Etc. - In Ground Octagon Spa Cover. This customer replaced an old style fiberglass cover (in background). The old cover provided zero insulation and didn't keep debris out. This Heavy
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