This Transparent Lid is designed for use with the Millennium System 22-inch and 26-inch side-mount filters, offering a practical and durable solution for maintaining your pool’s filtration system. Made from high-quality, transparent plastic, this lid allows for easy visual inspection of the filter’s interior without needing to remove the lid, saving time and effort. It provides a secure seal, preventing leaks and ensuring the efficient operation of your pool filter. Specifically crafted for the Millennium System side-mount filters, this lid guarantees a perfect fit and optimal performance.