Built-In MicrowaveWhat it is: Built-in microwaves include a trim kit that's often ordered separately. Any size microwave can be built in — large-capacity, high-wattage units or compact countertop units — but the trim kit allows the microwave to look more integrated. Variations: Built-in microwaves can be installed on their own in a cabinet or above a single oven unit. Trim kits from manufacturers often come in a few sizes, and custom trim kits are also available. When to use: When specifying a built-in microwave, it's important to consider the following:Will it be located in a place that's out of the cook's way but also easy to access? I've found that near the refrigerator works best.Is there counter space nearby to set hot dishes on?Is it at a convenient height for the entire family?How deep is the cabinet for the microwave? How does it work with adjacent cabinetry? Which way will the microwave door swing? Will the door get in the way? Tip: Be careful when figuring out the depth of the cabinet for your built-in microwave, and be sure to measure the plug, too. Specs can be tricky, and the depth of the plug might make your built-in microwave not look so built in after all.