This is a Waterway Plastics 519-3150 Front Access Vacuum Plate with a 90 Degree Elbow. This vacuum plate is designed for the Flo-Pro and Flo-Pro II Aboveground Skimmers and Skim Filters.
The vacuum plate measures 6-3/4 inches in diameter. It is for hoses 1.25 or 1.5 inches.
