ᐅ Tall cabinet without a top panel?

Hi everyone,

If you install a built-in oven in the following cabinet, what is used as the countertop?
The tall cabinet carcass is 195cm (77 inches) high, but the top panel is missing here.
Do you simply place a worktop on it? How do you attach it? Sorry for the basic questions.

THANKS!

Hello,

"Including ventilation grille. Add worktop sold separately." The narrow ventilation grille shown in the picture is installed at the top of the worktop. The worktop is screwed to the supports.

Yes, it is planned to install a countertop on it.
There are holes in the metal beams on top, through which the countertop can be screwed to the cabinet.