A:Answer Yes, the PEM31SFSS is the replacement, but it is slightly taller than the old GE spacemaker. This makes the trim kit no longer valid, you have to trim the kit smaller if you are ok with some wood working. The mounting kit is supposed to be WX4-A019, which in reality is almost the same as the old mounting kit. However, the new PEM31SFSS hole pattern is different on the right side (mounted farther in and close to the center).