Who would you suggest I be looking at for a prefabricated cleanroom? Please note that my site is in the Northeastern US.

Let me precursor this by saying I’m biased. I know, respect and like these people and they make a highly regarded prefabricated cleanroom. That being said I would recommend taking a look at the offering of the folks at G-CON. They are located in Texas so that likely puts them within trucking distance to your site. Of course there are others, but I’m not nearly as familiar with them.