The APEC Water Systems 50 GPD Membrane Replacement Filter and 10" High Capacity Inline Carbon Filter bundle provides a complete water filtration solution for reverse osmosis systems. The APEC MEM-ES-50 is a 50 gallon per day replacement reverse osmosis membrane made with industry-leading thin film composite technology to effectively reduce a wide range of water impurities. With its fast response and ability to perform in extreme conditions, this 10-inch membrane delivers high purity drinking water. Complementing the membrane is APEC's FI-ES-TCR-QC Inline Carbon Filter which uses acid-washed carbon media in a friction-welded housing to provide maximum chlorine, taste and odor reduction. Its disposable design with 1/4" quick connect fittings installs easily before the storage tank to polish the RO water. Together these components offer the core filtration for an efficient undersink reverse osmosis system that produces cleaner, tastier water for drinking and cooking.