A:Answer Hey Frigidaire Shopper! In order to properly install the wall oven (FGEW2765PW) you will need to have a cutout that is 27-1/4 (minimum) inches to 28-5/8 (maximum) inches wide, 24-7/8 (minimum) inches to 25-1/4 (maximum) inches wide, and 23-1/2 inches deep. We hope this information is helpful to you. –Thanks!-