Max. Temperature: 265° F. Tensile Strength: 10,000-15, 000 psi (Good) Impact Strength: 8.2-12 ft. - lbs./in. (Excellent) Hardness: Barcol 50 (Hard) For Use Outdoors: No. Specifications Met: Sheets and Strips 1/16" and thicker meet UL 94 V-0. Often used for electrical applications in humid environments, these GPO3 fiberglass sheets and strips