It's a 900 or a 1000 series. If the computer is a crank-reset, it's a 900. If it has automatic reset it's a 1000. Also, if the sight glass is in the door it's a 900, if it's on the side it's a 1000. Doors are interchangeable, as are most small parts and trim. There is some 900 and 1000 specific parts, but they are not too hard to find.