Our 2018 Thor Windsport 28M microwave crapped out last week. Couldn’t find any relevant suggestions online and assumed it was off-brand low quality like most of the appliances. Looked online figured out that the “box” itself was standard size for NW under 2 cu ft. Luckily we discovered that Home Depot sells a house brand (made by GE apparently) Vissani. We bought the 1.4?cu inch 1000W model for under $200. The rear wall bracket was perfectly lined up. As there is no cabinet above the microwave, I did have to move the overhead steel bracket forward by 1/2” to properly line up the overhead screws that enable the top front to be connected- 6 square head screws. I had to Jerry rig a tool to remove the suspension screws as there’s on 3” of head space to work in.