Compatibility: Skimmer Basket for Above Ground Pool Compatible with Hayward dyna-skim automatic skimmer model SP1091WM, SP1091LX. Also fits Pentair HydroSkim Skimmer 513330 Upgrade Design: Designed for maximum water flow and pool filter life to meet OEM standards at a greater value High Quality Materials: Made from durable plastic resin for long life and resistance against brittleness Measurements: Top Width 4.7", Top Outer Width 6.25", Bottom Width 3.75", Height 3" This is non-original aftermarket part but It made exactly fit for Pentair HydroSkim Skimmer
eBay