GLI 16' x 36' Rectangle Mesh Safety Cover w/ 4' x 8' CES, Blue | 20-1636RE-CES48-SAP-BLU Cartridge Filters Check for metals and if

Check for metals and if present add a stain and scale inhibitor to prevent staining of pool surface due to metals

Safely removes metal stains from pool liners and finishes

Using four cartridge elements

or if being used during start-up of a new plaster pool

When using other products as outlined in the directions for this product

GLI 16' x 36' Rectangle Mesh Safety Cover w/ 4' x 8' CES, Blue | 20-1636RE-CES48-SAP-BLU Cartridge Filters Check for metals and if16' x 36' Rectangle Mesh Safety Cover with 4' x 8' Center Entry Steps section, Blue Color. Our Secur A Pool Safety Cover is renowned in the industry for its strength, durability and ease of installation. In addition, it is a maintenance free cover that provides pool owner complete peace of mind during the off season that their pool investment is not only protected against the elements, but also, will not pose a danger to unexpected visitors. Features