What size wall oven do I have?

I want to replace my ancient wall oven but I do not know if it is a 24" or a 30"

Kenmore Model #40429
purchased and installed 1992

Users Manual indicates width is 22 3/4" and height to top of panel is 28 3/16". So do I buy a 24" (width) or a 30" (height)?


Thanks all.