Shields Extra Heavy Duty Vinylvent 3"

Shields Extra Heavy Duty Vinylvent 3" x 50 FT. Wt. "C": 17. O.D.: 3 1/8" or 79.4mm. I.D.: 3" or 76mm. Shields Extra Heavy Duty Vinylvent has an extra heavy PVC wall Supported by vinyl coated helical wire and is resistant to ozone, UV, and corrosion Flame resistant and meets the UL94V standard Primarily used for venting of bilge fumes