30" Wall installation for all Panasonic 1.6 cuft Stainless Steel Microwaves * 27" (W) x 18 3/8" (H) outside dimensions * 24 5/8" (W) x 13 7/16" (H) inside dimensions * Cabinet cut-off must be 25 1/2" (W) x 17 3/8" (H) x 21" D min. * Installation required and all parts are included for easy installation