About This Replacement Micron Cartridge and JH Floss Sleeve for MarineLand Magnum Canister Filters and Polishing Internal Canister Filters(ML90770); A good and more economical replacement for the Micron Cartridge PA0140 and ML90769 JH Floss Sleeve Made of durable material, with better water permeability, no clogging after long-term use, and reducing the frequency of dirty hands. High-efficiency polishing with this micron cartridge: The reusable pleated micron cartridge removes fine debris, leaving the water crystal clear. Make your aquarium more beautiful and your fish more active. The micron cartridge: Rinse and clean it when the water flow is noticeably reduced; we suggest you replace it every 2~3 rinses to prolong the life of the Canister Filter. The Floss Sleeve: We suggest you replace it monthly We recommend using the micron cartridge and the 3-stage filtration with Floss Sleeve alternately. What's in box: micron cartridge*3, JH Floss Sleeve*3, Foam Gasket*3 Please don't throw away the original rigid core support; the Micron Cartridge needs it. When you change from a micron cartridge to a JH Floss sleeve, keep the rigid core support for use, too. Never use soap, abrasives, or any other cleaning agent on or around the filter. Overview Material : Polypropylene (PP) Product Dimensions : 3"D x 3"W x 6.5"H Item Weight : 3.2 ounces External Testing Certification : CC Product Benefits : Increase in Oxygen, Removes Odor