Watts 5-PK-4SV Premier compatible 1-Year 4-Stage Reverse Osmosis Replacement Filter Kit, 5-Pack Designed for use with Watts Premier's RO-TFM-4SV (09129993) or Zero Waste (0950045) Reverse Osmosis Systems Kit contains TWO 5 Micron Sediment Pre-Filter , TWO 5 Micron Carbon Pre-Filter made of high quality activated carbon, and one 10 inch Granular Activated Carbon (GAC) Final Filter The Sediment Pre-Filter reduces dirt, silt and rust The Carbon Pre-Filter reduces chlorine taste and odors and conditions the water GAC Final Filter removes any remaining chlorine or chemicals that cause bad taste or odor Recommended replacement of both the Sediment and Carbon Pre-filters every 6 months, and your GAC Final Filter should be replaced annually Watts 5-PK-4SV Premier compatible 1-Year 4-Stage Reverse Osmosis Replacement Filter Kit, 5-Pack -Filter pack. -Pack of 5. -Replacement filters are standard 10'' replacement filters, so they will fit the Premier Reverse Osmosis systems as well as other standard 10'' filter housings. -Fits all standard filtration systems. -NSF certified. Product Type: -Reverse-osmosis. Filter Component: -Replacement filter. Country of Manufacture: -United States. Dimensions: -10'' H x 2'' W x 2'' D, 6 lbs. Overall Height - Top to Bottom: -10". Overall Width - Side to Side: -2". Overall Depth - Front to Back: -2". Overall Product Weight: -6 lbs. 4 stage reverse osmosis replacement filter kit. This kit contains one year worth of replacement filters for your four stage reverse osmosis system. This kit contains two (2) Sediment, two (2) Carbon Block, and (1) 10" GAC Inline Polishing Filter. Replacement filters are standard 10 inch replacement filters, so they will fit the Watts Premier reverse osmosis systems as well as other standard 10 inch filter housings. Refer to your system installation and operation manual for proper filter change out procedures. To ensure ease of installation and maintenance we have here on staff a full customer service and technical support team you can call for assistance. This is a non OEM replacement product.