Filtration Precision Up to 1 Micron To ensure ecellent filtration performance, this filter element uses highquality coconut shell activated carbon as the filter material, with a filtration precision of up to 1 Micron. Effectively removes various impurities such as sand, rust, sediment, odor, etc., while effectively absorbing residual chlorine, with a removal rate of more than 99.Compatible Models The filter can replace Berkey BB92 water filter. Compatible with Berkey gravity filtration systems including Travel, Grand, Royal, Imperial and Crown Series. The precise design of the washers and wing nuts ensures a secure connection and prevents leakage. No primer is required, it can be installed and used after replacement, saving early flushing work. No problem with low flow.Durable Lifespan To etend the life of the unit and get the best performance, we recommend replacing the filter every 6,000 gallons depending on the quality of the tap water you are filtering. Please note that you must fully submerge the carbon filter once a week for the drip system to function properly.Affordable and CostEffective Why pay 4 times the price for a brand name BB92 filter offers the same level of filtration and performance as name brand filters, but at a more affordable price. By choosing us, you can enjoy the benefits of highquality water filtration while keeping costs affordable and costeffective.Note Before installing the filter, soak and clean the filter to remove any remaining manufacturing dust.Color BlackMaterial activated carbon from coconut shellsPackage contents4 Water Purification Filter ElementsOnly the above package contents, other products are not included.Note Light reflection and different displays may cause the color of the item in the picture to be slightly different from the real thing. The measurement allowed error is 13 cm.