Needing a hydraulic filter for Leimbach system

[rockNmayhem]

As the title says I'm needing to replace a missing filter for the Leimbach system. I seem to have mysteriously lost one on my brand new system and I can't find it anywhere. I opened the box up and pulled everything out and have yet to find it. I figured it would be in the canister but when I looked inside there was nothing to be had. So my question is, where can I get a replacement filter or what can I make work for the system instead of the Leimbach one.

Does any body have a picture of what it looks like as well? I know mine is not here that I can see so I really have no idea what I'm truly looking for other than what I figure looks like a small brass particulate type filter like the old fuel filters but much finer.

I'm kinda confused as to why I didn't receive one already installed in the canister to begin with.

Thanks for any help guys.
Tyler