Frost King Fiberglass Pipe Wrap Kits, 3"x1/2"x50' Simple, effective way to insulate pipes of all diameters Ideal for overwrapping electric heat cables to prevent freezing Kits consist of a roll 1/2in thick fiberglass and plastic vapor barrier overwrap Frost King. Fiberglass. Pipe Insulation Kit Simple And Effective Way To Insulate Pipes Of All Diameters Ideal For Overwrapping Electric Heat Cables, And Used To Prevent Water Pipes Freezing Kit Comes With 25-Feet Plastic Vapor Barrier, 1.6 R-value Package Covers 3-Inch X 1/2-Inch X 50-Feet Roll For Either Hot Or Cold Water Pipes