FREE Shipping! Filter Replacement Set for EWS Three-Stage Reverse Osmosis System with UV (RU300C18 w/ UV) Item No. Included in This Set: PRESED-05, GAC-00, RO-M-CTA, UV Lamp Description: 5 micron pre-sediment filter, Granular activated carbon postfilter, CTA membrane, UV microorganism-kill lamp Replacement Schedule: Up to 1 year, not to exceed 1 year Filter Codes: 1, 6, 11 & 16 Special Note: EWS uses full-size, full bed depth, medical-grade filters for optimum performance and longer life   Handmade in the USA from USA-Made Parts