No. You need a countertop model that has a built in trim kit available. And you need the right oven cabinet.

If you're using stock cabinetry sized in round numbers - i.e., 30" wide, as would typically be used with a 30" wall oven (which is 28" - 28.5" wide so it can fit inside a 30" cabinet) - an OTR microwave wouldn't fit because the appliance itself is 30" wide.