36 Cooktop With 30 Oven . Yes, you can put a 36 over a 30 wall oven. Refer to cooktop and wall oven/warming drawer installation instructions packed with product for current dimensional data. 36 cooktop 30" oven Google Search Kitchen ideas Pinterest Wall from www.pinterest.com *edit* the answer is yes you can do it *depending on the cooktop/oven combo*. 30″ gas cooktops are approved for use over select ge 27″ and 30″ wall ovens and warming drawers. Removing mw over cook top and installing hood, so have to remove the cabinet above.