The grill vent was brittle and several pieces had broken off when cleaning, looked bad.

This was really easy, just had to remove three screws, pop the vent cover off, pop the new one in place and replace the screws. I ended up at this parts website because of the pictures provided, it made identifying the correct replacement part very easy, all of the other sites I viewed had lists of parts for the microwave with no pictures, this site made it simple, no guessing on the name of the part I needed, I will definately use PartSelect again.