I'm selling my house and one of the things the buyer wants corrected is the interior door from the house to the garage. It is a solid core wood door that I cut a hole in many years ago for a pet door. He has asked for a "fire-rated" door to which I agreed.
The guy at Lowe's told me fire-rated doors are exterior grade steel doors and of course the one I need is not in stock and must be special ordered. Is it true this door will have to be steel and if so will the old door frame work if I just replace the door itself at the hinges?