TGI Pure / TopWay Global TGI-525 & TGI-E-525-P Five Stage: Stage 1: Sediment Prefilter 5 Micron #FI-SED1005 (FWS #GD-25-1005)
Stage 2 & 3: Carbon Block Prefilter(s) x 2 #FI-CT0010 (FWS #OMB934XF)
Stage 4: 25 gpd TFC Membrane #MM-TFC025 (FWS #200357)
Stage 5: Inline 10" GAC Postfilter 1/4" FPT #FI-CBA010 (FWS #K2533-BB)
Note: Please remove the elbow fittings from your existing inline postfilter and install on your new replacement inline filter with some teflon tape.