cabin filter box missing
 

I got my E55 in February and haven't put much thought into the fact that the cabin filter box is missing. I know some take it out to do split cooling, but I don't have split cooling (yet) and I don't intend on getting a reservoir that goes where that box goes.

So, I'd kind of like to have that box there, pollen is pretty bad where I live. There isn't an abundance of these cars nearby to find one in a junk yard, so is there anyplace online that I might be able to find that box?

If you are referring to filter bowl (530) you can start here to comparison shop: https://parts.com
Bowl 2118300003 $14.95
Filter 2118300018 $24.15
Nut 0009840010 $1.26

Those do look like what's missing as much as I can tell, that seems irregularly cheap. I'll grab those and see if it all goes together like it should. Thanks.