Insulation Protection Shield, 8A, Material of Construction Galvanized, 16 Gauge, Pipe Size 1 1/2 To 4 In, Insulation Thickness 1 To 2 In, Insulation OD 6 41/64 In, Length 12 In, Standards and Approvals A-A-1192A (Type 40), WW-H-171-E (Type 41), ANSI/MSS SP-69, and MSS SP-5 (Type 40)