I bought a new oven and am getting rid of old one, a 27" built-in electric wall oven, Whirlpool self-cleaning oven.
Its 15 years old and occasionally the door doesn't completely close unless I lean something against it.
Otherwise, it worked fine.
It fits the standard cutout for a 27" oven. Dimensions of part of oven that would fit into cutout 24.5" W x 27.5" high x 22.5" deep, which seemed exact same size as the new 27" oven I got, so size is probably very standard.