For a stylish built-in look, use the 30 Inch Stainless Steel Microwave Trim Kit with your Frigidaire Professional 2.2 CU. Ft. Built-In Microwave. This trim kit is designed with a smooth stainless-steel finish and will help complete your kitchen design. A trim kit is required for installation of your built-in microwave and includes all the necessary hardware for installation into a cabinet, wall, or over an electric wall oven. For use with Frigidaire Professional Microwave model PMBS3080AF.