GRADY WHITE SCUPPER FLAP SET BLACK RUBBER SCUPPER FLAP, GASKET, WHITE PLASTIC RETAINING RING W/ 4 SCREWS. USED AS THE SCUPPER FOR GRADY WHITE ENGINE WELLS AND ALSO ON SOME YEARS/MODELS UNDER THE WATER LINE FLOOR DRAIN SCUPPERS. MEASURE 2.75" OUT DIAMETER WITH A 1.75" DIAMETER FLAP. SOLD AS A SET (2). THIS IS A NEW, DIRECT FROM GRADY PART. PART NUMBER # 38-761