The OEM microwaves or convection microwaves that RV manufacturers use are, for the most part, garbage. We just replaced our 30" over-the-range Furrion convection microwave with an LG. I had to switch out the lower rear bracket and drill two new holes for the top screws in the upper cabinet. It was a perfect fit from a size perspective and the quality and functions are miles ahead of the OEM Furrion. Don't get stuck trying to find what originally came in the RV - especially from that long ago.
Rob
U.S. Army retired
2020 Solitude 310GK-R
MORryde IS, disc brakes, solar, DP windows
(Previously in a Reflection 337RLS)
2012 F350 CC DRW Lariat 6.7
Full-time since 8/2015