Perko 1-1/2″ Thru-Hull Fitting for Hose Plastic Molded White Plastic Broad Flange Technical Information: Hose Size Inches: 1-1/2 Mounting Hole Diameter Inches: 1-7/8 Maximum Hull Thickness Inches: 1-7/8 O.D. Flange…Continue readingPerko 1-1/2″ Thru-Hull Fitting f/Hose Plastic MADE IN THE USA [0328DP8]