Model # H4780B Appliance Dimensions Width: 27 3/8” Height: 23 7/16” Depth: 21 3/8” Installation/Cabinet Cutout Requirements For proper fitment into your cabinetry, the required opening typically falls within these ranges: Cutout Width: 26 to 26 1/4 “ Cutout Height: 23 3/8” to 23 7/8” Inside Depth: At least 21 7/8” from front to back. Worked properly when tested.