Cholila Cover Backflow Preventer Cover Insulated (5°F) - 16" W x 20" H Sprinkler Covers for Outside for 2-Way Opening Pipes - Backflow Insulation Cover with Thicker 7 Layers Fabric - Backflow Cover

Additional Details from the Manufacturer

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• Save Costly Pipe Repairs: Every winter, many people complain that despite the time they spend wrapping towels and tape around their pipes, the pipes break and leak, and even cost a lot of money to repair. But with this backflow insulation cover, you don't have to spend so much money again. Don’t wait before it’s too late
• Cover Size: Our backflow valve cover insulated is 16*20 inches. As what we provide is the outer dimension of the product, and the product itself has a certain thickness. So please measure your pipe size and reserve about 3 inches or more of extra space before purchase
• Thickest Materials: Our sprinkler backflow cover for winter has fairly thick material! The sprinkler cover for the outside is made of 7 layers of material. The outer layer is 600D Oxford Fabric with a water-repellent effect, the inner layer is two layers of non-woven fabric, two layers of PP cotton with thermal insulation, a layer of aluminum foil with a thermal insulation effect, and a layer of waterproof lining. They help keep your pipes warm and from bursting during freeze
• Insulation Aluminum Foil: Aluminum foil is made of electrolytic aluminum or aluminum alloy sheet with a purity of 99.3% to 99.9%. Aluminum foil is a recognized material that isolates packaging items from the outside world, whether it is water vapor or air, etc, which greatly enhances the antifreeze performance of the backflow insulation cover
• Anti-wind and Anti-theft: The bottom of the backflow cover is Velcro, which keeps the cover sealed closed to prevent cold wind from entering. There are also two metal loops on the Velcro, you can use our cable ties or use your own chain or small lock to fasten it to prevent it from being easily stolen by others