Replacing microwave – does it have to be an “RV” microwave? July 23, 2024 at 12:24 pm #41346 Bill GreeneParticipant Joined: Jan 2024 Posts: 52 Likes: 41LikeUp2::Yes, you can use any microwave that will fit. We replaced our OTR microwave with a regular GE microwave. We have regular sized appliances in our camper so a 30″ microwave fit perfectly and was easy to install.