It makes me wonder if the lower oven fronts are actually real wood, perhaps to match the cabinets of the kitchen it was in originally? Sort of like matching cabinet front panels on high-end dishwashers and refrigerators?
And if that is the case, how did they keep the wood from drying out or warping from the heat of the oven? Or, catching on fire during oven self-cleaning? The only thing I can think of is perhaps there there was an air space behind the wood panel, between it and the actual oven door, plus some kind of insulation behind the wood panel.
Even fake wood, such as an injection-molded plastic panel or laminate, wouldn't be able to withstand the heat without some engineering magic.