For a stylish built-in look, use the 30 Inch Black Microwave Trim Kit with your Frigidaire 1.6 CU. Ft. Built-In Microwave. This trim kit is designed with a smooth 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*. Available in a variety of colors and sizes. For use with Frigidaire Microwave model FMBS2227AB.