Four Times the Filtration Power With the capacity to hold up to four filters at once, this four-pack of Alexapure Pro Genuine Replacement Filters will keep your water flowing at an optimal speed. Or, if you're satisfied with using one or two filters at a time, you can store this pack as backup for when your filters need a change! Filtered Water That Just Tastes Better With the Alexapure Pro® Water Filtration System, you get filtered water that tastes better. For this and more, count on authentic Alexapure® products. Alexapure is the only brand of gravity-fed and portable water filters we carry because we know you expect the very best. You can trust Alexapure to supply filtered water for every member of your family—we do! Keep Filtered Water Flowing The Alexapure Pro can house up to 4 filters, allowing you to increase the flow rate exponentially without sacrificing water quality. With this 4-pack of filters, you have everything you need for fast filtration! When you notice a drastic change in the flow rate of your Alexapure Pro, it's time to change the filter(s). Use only Alexapure Pro Genuine Replacement Filters to ensure the highest quality results. Each filter has a verified* filtration capacity of 200 gallons. Features Designed for exclusive use in the Alexapure Pro Water Filtration System Proprietary gravity-block, ionic-absorption technology Silver-Infused Outer Carbon Block Ready right out of the box and no priming necessary Reduces 206 contaminants** commonly found in drinking water: Bacteria (> 99.9999%) Chlorine (> 99.9%) Fluoride (> 97%) Pesticides (> 95%) Pharmaceuticals (> 95%) Viruses (> 99.99%) Heavy metals Lead Click here to see independent test results of the Alexapure Pro Water Filtration System's performance. Package Contents (4) full-size Alexapure Pro Genuine Replacement Filters (4) sets of installation hardware Changing the Filter Remove the lid from the upper chamber. Remove the empty upper chamber, steadying the old filter in one hand. Reach beneath the filter and remove the wing nut holding the unit in place. Slide out the old filter and discard it. Remove the new filter from its packaging. Unscrew the plastic wing nut, leaving the washer in place. (This filter is packed in distilled water to ensure it is microbiologically sterile.) Thread the stem of the filter through one of the four holes in the floor of the upper chamber, taking care to hold the filter straight. Secure the filter beneath by replacing the plastic wing nut. No need to pre-prime your new filter; your Alexapure Pro is ready to use right away! Care and Cleaning Each Alexapure Pro Genuine Replacement Filter provides long-term performance with little maintenance. If you notice buildup on the surface of the ceramic filter shell, carefully remove the filter. Use a non-abrasive pad and fresh water—without soap—to clean the unit. Then, put the filter back in place. Our Guarantee We extend a 30-day, no-questions-asked return policy on unopened products. After 30 days—or for products already opened—we will review your return request on a case-by-case basis. Our goal is to ensure you have a pleasant experience from start to finish! *Capacity is determined under controlled laboratory conditions and established protocols. Your conditions may vary based on target contaminant and influent water quality. **Chlorine reduction claims are not performance tested beyond 200 gallons. Additional performance claims are based on independent laboratory and manufacturer’s internal test data. Actual performance is dependent on influent water quality, flow rates, system design and application. Results may vary. This system has been tested for the reduction of the substances listed in the product test data sheets. The concentration of the indicated substances in water entering the system was reduced to a concentration less than equal to the permissible limit for water leaving the system, as specified in NSF/ANSI 53. Minimum substance reductions are listed on the pr