Overview Reviews Similar Products –> Product Description Scupper Valve Provides a water exit for boats with self-bailing cockpits. Acetal construction. Accommodates 3875B thru-transom thru-hull connector (screw holes must be drilled for installation.) Diameter: 2-7/8″ Use as a replacement valve for 3881 Thru-Transom Scupper Caution: Thru-Hull connectors are designed for installation above the water line only. WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov . Product Videos Custom Field Product Reviews Write a Review Write a Review Attwood Marine Attwood Scupper Valve Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Email * Review Subject * Comments *