To house a washing machine on a hallway landing. 2 problems to solve; first was how to make a frame front with as little gaps as possible to stop too much noise escaping from the machine in use. The answer was to scribe and permanently fix an outer frame to the wall with the complete door frame removable via 3 screws. The join was hidden by a pencil beading.
The second problem was a window behind the unit which was lower than the worktop height. Usual practice leaves an unsightly gap and unresolved look; I got round this by making a false cill and upright moulding and cut a slot in the existing architrave so it could fit in and give the look of a normal window frame! only thing giving it away was the horizontal sash bar on the window.