Carvin/Jacuzzi® 94223381 Cartridge Filter, Carvin Sherlock 100, 100sqft, 2"fptModel SHER100 SherLok Series Cartridge Filter by Carvin Pool Equipment for In-Ground Pools, Above-Ground Pools, and Spas FEATURES: Ring-Lok access to filter element for "tool-free" servicing Automatic Air Bleed assures 100% filtration and longer filter cycles Safety tab lock assures proper installation and safe operation Patented sediment catcher prevents debris from falling into the tank when the element is removed Coreless elements allow easy cleaning from inside-out with a garden hose One-piece body with 2"FPT (Female Pipe Thread) connections is injection-moulded from glass-filled thermoplastic Corrosion resistant 2" (51mm) drain to assure easy draining and winterizing Drain port may be used as alternate inlet allowing flexibility during installation Easily convertible from element filter to Avalanche D.E. filter Anchor kit included to secure tank to base or pad