T-H Marine - #1 Plastic Thru-Hull Supplier in the U.S.A. Our molded Thru-Hull fittings are used by more OEM boat builders than any other brand. All T-H Marine Thru-Hull Fittings are made of the highest quality virgin material to insure consistent size, extra durability and attractive appearance. All materials are UV stabilized to provide longevity. T-H Marine has worked with major hose manufacturers to guarantee that our hose barbs have the exact specifications to fit hose securely so that your installations will be trouble free. A B C D (hose) E 2-3/8" 3-1/4" 7/8" 1-1/8" 1-3/8"
TH Marine Poly Thru Hull - 90 Deg. - 1 1/8" Hose - White