There is one school that stands above the rest when it comes to producing great offensive linemen year after year after year in the MAC - the Northern Illinois Huskies. Sure, CMU has had their share of great linemen (even having a #1 overall draft pick), but it has been the Huskies that have dominated the OL category consistently for the past two decades.
Last season, the Huskies allowed just ten sacks (second fewest in the NCAA) and ten quarterback hurries, while averaging the fifth most rushing yards in the FBS, so the offensive line was certainly one of the bright spots for the Huskies.