Forum Archive : Doors

I am looking for recommendations for places to purchase doors to be hung in the entrances of 2 rental apartments. I believe according to the building code the doors need to be 90 minute fire resistant (it is a 3 family house). I do not want to put steel doors but would prefer something more attractive that is wood or looks like wood (MDF). Does anyone have any suggestions as to where I can purchase these and for how much? The door entrances are 33.75″ wide by 87.5″ high. Thanks!