This Microwave Trim Kit Is The Perfect Solution For Installing A Countertop Micowave In A Wall To Create A 27" Built-In Look. This Trim Kit Accepts A Jennair Jmc9158Bab Countertop Microwaves. Simply Install The Trim Kit In A 25" Wide X 16 7/8" High X 23 3/4" Deep Opening To Create 27" Built-In Look. All Parts, Hardware And Installation Instructions Are Included.