Replacement Cartridge Kit for Hydrotech HT & HTF Series Reverse Osmosis Systems

(1) 5 Micron Removal of Dirt, Rust & Sediment (2) Carbon Pre- and Post-Filter 11.5" × 2" Cartridges Need a replacement membrane? View our Hydrotech Replacement Membranes Replacement Sediment Cartridge and Carbon Block Pre- and Post-Filter Cartridges for HT and HTF Series Reverse Osmosis Systems, Blue End Caps. If you are not sure which Hydrotech Membrane you need, look on the back of the dust cover for a silver sticker. Below the line of text, marked "Unit Description" the type and size of the membrane are indicated. The marking with start with either TFC or CTA for the membrane type, followed by the membrane capacity (9, 15, 25, 35 or 45), and then the letters GPD for gallons per day. Example: TFC 25 GPD or CTA 15 GPD. Example: TFC 25 GPD or CTA 15 GPD. We send the original Hydrotech instructions on how to change filters and sanitize the system with each order.