2 Pack Hayward CX900RE, Star Clear Plus C-900, Unicel C-8409, Pleatco PA90, Filbur FC-1292, All American AA-H900-2 Replacement Swimming Pool Filter Cartridge

"ALL AMERICAN cartridges" is a trademarked private label cartridge manufactured in the USA!! Many cartridges are now made in China and Mexico; please check their packaging. A purchase from us supports a small business with the entrepreneurial spirit that makes America Great! We greatly appreciate your business; we know you have many buying options. "ALL AMERICAN cartridges" are constructed with REEMAY filtration fabric. Pool and Spa Owners and Technicians rely on cartridges made with REEMAY, to perform consistently over time and to require less maintenance. REEMAY sets the industry standard for filtration media and remains the most trusted fabric in cartridge filtration. REEMAY FILTRATION FABRIC.....Higher dirt-holding capacity for sparkling water.....Unique trilobal fibers increase filtration performance.....Greater strength and durability holds up under pressure and to multiple cleanings..... Sure flow molded cores.....Antifungal Biocide high impact end caps.....When you purchase cartridges constructed with REEMAY, you're buying the best. THE LENGTH OF TIME A CARTRIDGE LASTS depends on several FACTORS.....THE MOST IMPORTANT IS THE NUMBER OF TIMES THE CARTRIDGES ARE CLEANED AND HOW THEY'RE CLEANED, not power washed.....During the swimming season, the cartridge should be cleaned every 4-5 wks.....If there's a lot of debris or algae, the cartridge will need to be cleaned every day until the pool is clear..... If not cleaned often enough the cartridge will collapse....The length of the swimming season.....If the water chemistry is kept balanced.....If the pool is inside a screened in area.....The number of swimmers, suntan lotions, & pets in the pool.....If the area around the pool is treated for insecticides or fertilized.....Chemicals used to remove phosphates will break down the filter media......All of these factors will affect how long a cartridge lasts.