If an unexpected freeze occurs and you have not winterized your backflow you could have costly repairs on your hands. Protect your backflow assembly year round from sudden cold snaps that can occur in early winter or late spring with our FrostGuard™ insulated blankets. They will blend into your landscape better and offer superior protection to unsightly burlap wrap. Install the FrostGuard Blanket easily by just slipping it over the assembly; with 9 standard sizes that cover most 1/2" to 8" inline assemblies. They come in 2 choices of industrial grade, resilient, crushable, compressed fiberglass insulation, R-13 or R-30. Our rugged blankets are double stitched and the seams are heat treated to ensure a solid bond. The heavy 14 oz water repellent vinyl fabric used is UV and mildew resistant and fire retardant to meet NFPA-701 / ASTM E-84. They can be left on year-round for your convenience.