Stage 1
Culligan RS-23-SED5 Compatible Sediment Filter 5 Micron 12" - - Replace Every 12 Months
Stage 2
Culligan 1224437 Compatible RO Membrane 50 GPD - - Replace Every 12 Months
Stage 3
Culligan 32-175-050-100 Compatible Carbon Block Filter 10 Mic 2" x 12" - - Replace Every 12 Months
Stage 4
Omnipure K2333 Inline Carbon Filter GAC T33 2" x 6" - - Replace Every 12 Months