Needing to strip off trailing spaces

Good afternoon,

I am working on a file where I need to match up data from two different sources. I am running into a problem where I am unable to get a match due to trailing spaces on one data source.

I am looking for a step that will strip off trailing spaces. I have tried each of the following steps and none of them seem to do what I am looking for:
[ul][li]Strip Characters[/li][li]Strip Non Ascii Characters From String[/li][li]Strip Quotation From CSV[/li][li]Strip Special Characters (Newline)[/li][/ul]

Is there a function that will work for my use case? Here are two sample fields that I need to have spaces stripped from:
[table][tr][td]THE POOL EXPERTS INC [td]PO BOX 65 [/table]

If there is something available in the documentation, please let me know.