Wife wanted her micro lowered so she wouldn't have to lift heavy pans into micro without doing a bench press to get pan up and in. Found out that stove has to have either a 17 inch or 19 inch (can't remember which) clearance above stove. According to directions on replacement micro. Measured a few at RV show and must apply to RV's also. Returned micro and got money back and end of that project.
Not that anybody would inspect, but we figured there is a reason for exact clearance requirements.
Of course I've never seen stove police, (yet). And maybe convection is different?
Do I need a unit specific to RVs
We found one at Best Buy that fit, size and elec and trim that matched out interior. One at Lowes that would of worked but trim color did not match. Again maybe convection is different.