This GLB filter rinse is a 1-quart solution designed for cleaning pool cartridge filters. The product is new and ships free, making it a convenient purchase for routine pool maintenance. It helps remove oils, scale, and other debris from filter pleats to improve water flow and filtration efficiency. Suitable for pool owners performing regular filter upkeep, this rinse can extend the life of your filter cartridge. Since specific application instructions or compatible filter types aren't listed, please check the product details for full usage guidelines and compatibility information before buying. GLB Filter Rinse (1 qt). Condition: New. Listed at 32.99 USD. Experience crystal clear water with the GLB Filter Rinse. This liquid formula is a highly effective sand filter backwashing aid that works quickly and easily. It helps rejuvenate filter particles in the housing for improved efficiency and can be used with chlorine, bromine, ozone, and biguanide sanitizers. Achieve superior water clarity in one simple step. SHIPPING: We will do our best to ship your order based on the shipping method selected, however in some cases, your shipping method may need to be modified to meet shipping requirements based on the carrier. Our current carriers used are UPS, FedEx and USPS. Please contact us directly through the "Contact Seller" link if you need UPS, FedEx or USPS specifically for your order.