Remove the old door from the frame by unscrewing the hinges. Then fit the new door into the opening to make sure it's the right size.
Remove any old putty with lacquer thinner and the putty knife. Apply the new putty tape along the door.
Attach the door to the RV frame.
Run caulk around the exterior. Wet your finger and trace the putty until it is smoothed.
Fit the door back into the opening and attach the hinges. Make sure the door works properly by opening and shutting.
