This is a 3-pack bundle filter replacement for models ERO375/385 (Prefilter/Postfilter/50GPD Membrane)** I will confirm which model RO you have and send the correct 3-pack set you need. Pricing is the same on both models 375/385.
click to watch filter change video https://www.youtube.com/watch?v=2juFoNbTsIU
click to watch filter change video https://youtu.be/1UqGjBFTwzQ
click towatch filter change video https://www.youtube.com/watch?v=2juFoNbTsIU
