DekoRRa Insulated Pouch designed to provide freeze protection for backflow devices, May be used alone or with a rock enclosure, Built in grommets make it easy to secure, R13 insulation factor, Five year rated UV resistant materials, Two years UV protection when used without an enclosure, Waterproof polyethylene construction with sealed seams, This pouch is compatible with rock model 116, Model 616 dims 48""Lx30""H SKU: DKR059