The Glacier Fresh GFRVWPRO4 RV Filtration System Replacement Filters 3 Pack is a set of water filters designed specifically for RVs. Made by Glacier Fresh, these filters are carbon/charcoal filters that can remove chlorine taste and odor, providing clean and fresh water for drinking. The pack includes 3 filters, each with 3 stages of filtration, ensuring that your water is thoroughly purified. These replacement filters are compatible with the RV Filtration System and are manufactured in China. Perfect for maintaining a clean and safe water supply while on the road with your RV. Item is open box and sold as is. Fast shipping, no refunds or returns.