Mobile home doors came pre-framed. they have a styrofoam core with a wood stile frame and are white on the outside and white on the inside. Mobile home doors are measured differently than regular house doors. To measure a mobile home door you need to measure the rough opening in the wall of your mobile home (the measurement from stud to stud). Mobile home doors are either left hinged (LH) or right hinged (RH) as you stand on the outside looking at the door.