Frigidaire offers built-in microwaves, dishwashers, and single and double wall ovens, as well as wall oven/microwave combinations. Frigidaire also manufactures a variety of built-in air conditioners. Frigidaire appliances are available online at Frigidaire.com and at retail stores such as Lowe's and Sears.
Built-in appliances are actually attached to the kitchen cabinets as opposed to just set in place and plugged in. For example, over-the-range microwaves are built-in because they must be fastened to the wall and cabinetry. On the other hand, a refrigerator that simply plugs into the wall is not considered a built-in appliance, even when it is surrounded by cabinets.