Want some more nice MFG content in Revit, 3DMAX, OBJ and so many more formats? Go to Polantis and see what they have. You do have to sign up for a free user account to download but that's painless enough... The image above & below link to but one MFG each but there are many more...
I found the few I have tested are very acceptable RFA's and with a bit of modification the materials, etc. can be parameterized for project level manipulation... If you don't care that they may not make the piece with your materials, etc. that is... 'Depends on your needs, huh? If you simply need design objects then modify at will... If you need the actual MFG object to spec, I'd probably suggest AGAINST such modifications though...
Did I mention the files are free?
Did I mention the files look good?
They look good so far.
Not every object comes in every format, but having a lot is better than having a little... The download zip files can also include product data/cut sheets in PDF format, etc. So get to tying them into your specs now.
Hit the image below for their Catalog.