Hitauing 15 Pack PF-L Carbon Cartridges for Top Fin Silenstream PF20, PF30, PF40 and PF75 Power Filters Strong Compatibility: The specific size of our aquarium filter cartridge is 6 in L x 4.5 in W. It is very suitable for Top Fin PF20, PF30, PF40 and PF75 Power Filters. With this aquarium filter cartridge, you can keep your fish tank water healthy every moment. It contains 15 pack aquarium filter cottons, which you can change every 2-4 weeks. Excellent Filtration Performance: The filter cotton is made of cotton and carbon and has 3-layer filtering effect, which can filter and absorb 99% of the sundries, so as to keep the water source clean and the healthy growth of fish. Long-term Replacement of the Aquarium Filter: According to the test, the filter cotton has already withstood too much sundries for no more than four weeks, so you need to replace it with a new one to keep the water source healthy and clean at all times. Suggest to change filter cartridge every 2-4 weeks. Quick Installation: Just remove used cartridge and rinse new cartridge under cool water to remove dust. After rinsing, insert caftridge into flter chamber to protect the health and safety of your fish all the time. High-quality After-sales Service: HiTauing produces high-quality filter cartridges for fish tank filter, and is in a leading position in the quality and craftsmanship of all our products. We maintain a thorough quality control process to ensure compatibility with TOP FIN PF20, PF30, PF40 and PF75 Power Filters. If you have any questions, please feel free to contact us! Product Description Product Details 30% More Nutshell Activated Carbon Super adsorption and cleaning ability. Better and faster absorption of the filth and sundries in the water. Offer clean and healthy water for fishes. Compared with others, Nutshell activated carbon has developed pore structure,uniform pore distribution, and long life. Thicker High Density Cotton Increase the density of cotton to ensure even distribution of carbon which is good for absorbing undesirable odors, pigments, and chlorine. Triple Filtration Double-layer thickened polyester filter cotton can full absorb and filter impurities to keep water fresh. Built-in Nutshell carbon nourishing water, decoloring and reduce harmful or odorous gases for deodorization. Rinse Before First Using NOTE: Rinse new filter cartridge under room-temperature water to remove any dust. Then place new filter cartridge into filter by aligning key slot. Gently press filter cartridge into place. Compared with others Why choose Hitauing Replacement Filter Cartridges ? Our products contain 3 times activated carbon than the leading brands. These unique cartridges were designed to ensure even distribution of carbon which is good for absorbing undesirable odors, pigments and chlorine. More often to replace filter cartridges can prolong cartridge life. Upgrade dual-sided mesh can catches debris and waste. More Products Suitable for Top Fin EF-S Element and BF5 BETTAFLO Suitable for Top Fin Silenstream PF10 Power Filters Suitable for Top Fin Silenstream PF20, PF30, PF40 and PF75 Power Filters Size 2.1 in L x 3.7 in W Size 5.5 in L x 3.1 in W Size 6.5 in L x 4.5 in W Feature absorbing undesirable odors, pigments and chlorine Feature absorbing undesirable odors, pigments and chlorine Feature absorbing undesirable odors, pigments and chlorine Manufacturer HiTauing Package Dimensions 9.65 x 7.24 x 4.61 inches; 1.32 Pounds Size L-15packs Shipping Fast shipping is very important for us. Our standard US shipping service is FREE. Your order will be shipped within 2-3 business days upon full payment received. Your order will be delivered within 2-3 business days after the handling time. We only ship to the confirmed PayPal address. We reserve the right to cancel any order for any reason at any time. We are not responsible for undeliverable addresses. Returns and payment We offer a 30 days return policy from checkout winning date. We allow only PayPal as payment method FeedBack Your feedback very important to us, after you get your package and you are satisfied with our service please leave us positive feedback If you have any problem with your order / any questions please before leave any type of feedback For any questions, using contact system Please visit our store to check out other items for sale! Thank you for shopping at our store.