Correct. It will make 75 gallons per day at water of 50 degrees or higher and water pressure of 65 - 70 psi.
I notice there is no pressure guage built into that unit. I consider that to be important, but it depends where you live. My tap is below 50psi and in the winter gets very cold. I added a booster pump and now get the rated 150gpd out of my membrane.