This is all that I could find on it:
Great all around lager malt that can be used for American style Lagers and Pilsners and does a great job on European Lagers and Pilsners.
Rahr Premium Pilsner
Moisture 4.0% Maximum
Color 1.5 - 2.0L
Protein Total 11.0 ± 0.5
Extract FG 80.0 Minimum
Usage Rate up to 100%
What I do when something isn't listed is I open up my grains list under the ingredients tab and copy one of the similar ingredients and then open one of my two copies up and make the changes, so that it matches the profile for my new grain ingredient. In this case, you'd also rename it Rahr Premium Pilsner Malt also, so that you have it under it's proper name.