The bottom of my water heater door rotted away so bad the bottom door frame would fall out when the door was opened. I thought the door was made from a sheet of plywood, I should have known better. I removed the door frames and skins, removed the rotted part and built a new section of frame. Cost $0...

Hello all, The back door on my 1990 Skyline 14 x 70 is in need of replacement due to leaks and disintegration of the core. It is a cottage style fiberglass door. It looks like it just screws onto the home. Is it an easy replacement if I buy the exact same door? Any problems I might encounter? Thanks...