Backflow Preventer Insulated Cover (5˚F) Thick 6-Layer Fabric Pipe Insulation Cover (UV Coated) for Winter Freeze Protection,Water Well Pump Covers and Sprinkler Valve Covers to Withstand Harsh Weather (13"W X 12"H) 【Perfect Fit & Multi-Scenario Use】:Specially designed for a 13"W x 12"H backflow preventer, this insulation cover ensures a snug fit for Pressure Vacuum Breakers, outdoor faucets, and sprinkler valves; A versatile solution as faucet covers for winter and sprinkler covers for outside to protect various devices. 【Superior Winter Frost Protection】:Our backflow preventer insulation cover features advanced thermal insulation materials and thickened cotton that effectively shield your device from freezing temperatures; Prevent costly freeze damage to your backflow preventer, irrigation system, and water well pump sprinkler valve, ensuring operational readiness. 【Extend Pipe Life & Save Money】:Pipes with backflow insulation cover keep heat in the pipe even in cold climates,preventing energy waste and freezing,reducing the frequency of pipe repair and replacement and saving on costly repairs. 【Easy Installation & Secure Hold】:Experience hassle-free setup with integrated Velcro straps and metal grommets; This outdoor faucet cover for winter installs in seconds and stays firmly in place, resistant to wind and animals, providing reliable protection without complicated tools or effort. 【Easy and Stable Installation】:Place the backflow covers for outside insulation on the pipe and close it with Velcro to make sure it covers the pipe tightly,thus improving the heat preservation effect,designed anti-theft grommets can also be locked by chain to prevent theft and improve security.