Compatible with SX180LA and ProSeries and ProSeries Plus sand filters Product highlights Restores a secure drain seal to your sand filter, preventing unwanted leaks and water loss. Designed to match the 2025 drain cap form and fit for SX180LA and compatible ProSeries sand filters. Durable construction for routine pool maintenance and long-lasting use under normal operating conditions. Quick identification and swapout during filter service. Why you need this drain cap assembly Prevents leaks at the filter drain port that can lead to wasted water and reduced filtration efficiency. Replaces cracked, stripped, or missing drain caps so the filter can be drained and resealed safely. Keeps a spare on hand for routine maintenance and seasonal shutdowns. Key attributes Function: Drain cap assembly that seals the filter drain port and allows controlled draining when removed. Compatibility: Intended for use with SX180LA and ProSeries and ProSeries Plus sand filters. Pack size: Two drain caps included. Performance: Secure fit designed to maintain a reliable seal during normal pool operation and filter maintenance. Typical use scenarios Start of pool season: Replace an old or damaged drain cap before refilling and cycling the filter to avoid leaks during system startup. Winterization or storage: Swap in a cap prior to draining the filter and storing the system to prevent damage from leaks or freeze-related issues. What to expect Two-piece pack for immediate use plus a spare. Compatibility reminder Intended specifically for use with SX180LA and ProSeries and ProSeries Plus sand filters. Verify fit with your model number.