Protect your pool plumbing from winter freeze with a directfit 11/2' threaded drain plug set designed for Hayward SP1022C and compatible filter systems. Key benefits Prevents freeze damage: seals and drain lines to stop water freezing and expanding inside plumbing. Reliable seal: includes Orings to reduce leakage risk and maintain a tight fit through multiple seasons. Quick winterizing: simple threaded installation lets you winterize filters and lines without special tools. What's included 2 plastic threaded drain pluggers (11/2' size) 2 Orings for secure sealing Compatibility Direct fit for Hayward SP1022C 11/2Inch MIP models and replacement for SP1022CBLK Compatible with Waterway 190030 and general D.E., sand and cartridge filters for aboveground and inground pools Fits modular media filter systems such as PLM S7M120, S8M500, PLD50DE, S7S50 and similar models Suits EasyClean, Clean&Clear Plus, FNS Plus, Predator, PLM and 3series sand filters Size and fit Measures 5.5 x 3.5 cm Standard 11/2' threaded fit for common pool filter ports Material and performance Made from durable plastic with supplied Orings to preserve seal integrity Designed to withstand repeated seasonal use and protect plumbing in cold conditions across UK climate zones Practical use scenarios Winterizing an inground pool: install the pluggers in filter drain and ports before the first freeze to prevent damaged pipes and costly repairs. Servicing a Hayward SP1022C or compatible Waterway filter: a missing or damaged drain plug with these directfit parts to restore leak operation. Preparing an aboveground pool for travel or storage: quickly seal modular media filter ports to avoid water ingress and freezerelated expansion. Notes Threaded 11/2' size is intended for the listed models and common corresponding filter ports; confirm thread type and size on your equipment before installation. Includes two pluggers and two Orings so you can protect both sides of a filter or an existing pair.