【NSF Certified Material】The Type C filter is composed of PET composite filter, high chlorine resistant end cap, polypropylene core, all these are BPA-free materials and certified against NSF/ANSI, offering you a relaxing, safe leisure time！ 【Compatible Models】Outer Diameter: 4 1/4”; Length: 8"; Top: 2” Opening; Bottom: 2” Opening; Type C filter is compatible with filter pump unit models 28603EG, 28637EG, 28635EG, 28671EG, 58603E, 58604E, 56635E, 56636E, 56637E, 56638E and 58623. NOTE: ALL MANUFACTURERS' NAMES AND PART NUMBERS REMAIN THE PROPERTY OF THEIR RESPECTIVE HOLDER(S) AND ARE USED FOR COMPATIBILITY INFORMATION ONLY. IS AN INDEPENDENT BRAND. 【Great Filtration Performance】Innovated "Dirt-Locking" technology makes the fabric filter much more contaminants than regular fabric. pool filter Type C effectively reduces hair, leaves, dust, sediment, sand, etc., providing you a clean and comfortable swimming space to enjoy your spa or pool. 【Washable & Reusable】 pool filter C is made with easy-to-clean and hard-wearing fabric that is easier to be rinsed and then reused. It is recommended that you replace this A C pool filter every 2 weeks to maximize your spa and hot tubs' performance and protect your health. WARM TIPS: TO AVOID CORROSION, PLEASE TAKE THE FILTER OUT BEFORE CLEANING! 【100% SATISFACTION】We value our customer's shopping experience, if you have any problem with pool filter C, please contact us at any time, we will solve it within 24 hours. NOTE: PLEASE CONFIRM YOUR HOT TUB, SPA, SWIMMING POOl MATCHES OUR A-C POOL FILTER BEFORE PURCHASING. Length: 8”Outer Diameter: 4 1/4”Top: 2” Opening”Bottom: 2” Opening”Core: PP.Ideal Replacement for Pool & Spa Cleaning SystemsCompatible with model 28603EG, 28637EG, 28635EG, 28671EG, 58603E, 58604E, 56635E, 56636E, 56637E, 56638E and 58623 filter pumps or Krystal Clear filter pumps models 02 and 12R.Fits the following Polygroup filter canisters: RP-800, 1000, 2000; RX-1000, 1500; CP-2000.