Abrasion and weather resistant polymeric jacket, providing the best protection in the industry;Same insulating properties of elastomeric foam;Offered with 1/2" wall (R3), 3/4" wall (R5), and 1" wall (R7);5-year limited manufacturer warranty on insulation including UV Resistance;Compliances: ASTM E-84 25/50, UL 723, ASTM C534, ASTM E96, UL 94, ASTM G153, CA Title 24