Insulated Pipe Jacket, Cover Type Insulation Jacket, For Fitting Type Straight Pipe Sections, Jacket Material Silicone Coated Fiberglass Cloth, Insulation Material Fiberglass; Mineral Wool, Maximum Ambient Temperature 900 Degrees F, Cover Width 18 in, Cover Length 42 in, Thickness 3 in, Color Gray, Fastening System Quick Release Fabric Flap and Wiretwists, For Minimum Circumference 31 in, For Maximum Circumference 38 in, R Value 0.48, For Valve Type Universal, Standards OSHA, Market Industrial