This Built-In Low Profile Microwave Slim Trim Kit, Stainless Steel Makes It Easy To Refresh And Free Up Space In Your New Kitchen Or Kitchen Remodel By Converting Your Standard Countertop Microwave Into A Built-In Model. The Included Stainless Frame Is Streamlined To Take Up Less Space Than A Standard Built-In Microwave And Fits 12" Cutout Heights. Includes All Hardware Needed For Installation. Complete Product Dimension Are 31.5"L X 17.5"W X 5"D. Installing This Accessory Will Require Basic Hand Tools And Novice Repair Experience. You Must Unplug The Microwave Or Shut Off The House Circuit Breaker For The Appliance Before Installing This Part.