These scupper valves are simply the best and most fool-proof of any flush mount scupper valve available. The flapper is molded of a flexible thermo-plastic that is totally impervious to the effects of sun and chemicals found in the marine environment. These flappers will not curl up, rot, or lose their sealing ability. Features Mounts over 1 to 1-1 by 4 in. drain tubes Universal hole pattern to replace any defective flapper scupper Grooved inside to fit over drain flanges Attractive complimentary ring and flapper colors Specifications Size: 1.5 in. Finish: White with Black Country of Origin: USA