The Built-In Microwave Spacer Kit includes a 27" L trim piece, all necessary mounting hardware and installation instructions. This black accessory creates a finished, custom look for your built-in microwave by filling in extra space that may exist around the appliance. A universal kit, this accessory is compatible with many appliance brands and models; check to see if your model number is compatible. Installing this accessory will require basic hand tool and novice repair experience. You must unplug the microwave or shut off the house circuit breaker for the appliance before installing this part.