Built-in Trim Kit for 1, 8" and 2, 0" cu, Countertop Models: 27"" Stainless Steel, Build your Sharp microwave into a wall or cabinet with this Trim Kit, Provides ventilation as required and delivers a clean look that integrates the microwave into the wall or cabinet, Trim kit dimensions:, Height: 18 1/8"", Width: 27"", Wall opening dimensions:, Height: 16 7/8"" +/- 1/8"", Width: 24 1/2"" +/- 3/16"", Depth: 20"" minimum, General Features:, 27"" coverage, For models R530BS and R530ES, SKU: ALMO3868