Height of cooktop/oven + length of countertops

Do you have them cut to size or are they sold in this measurement? If yes, where? :3

At Hornbach. Kitchen countertop Oxid 34321 4100x635x38 mm

According to an employee, this board can also be ordered with other decors, and at our store the delivery time usually takes three weeks.

Speaking of cutting - the niche where the kitchen unit will go is exactly 3068mm wide according to measurements, is there any reason not to have the board cut to 305cm instead of exactly 300cm? (Can you tell this is my first time?)

18 mm of air is quite a lot, 2 mm for the edge band, so there are still 16 mm left. If 3068 mm is the smallest distance in the niche, I would have it cut to 3060. How is the wall finish done?

It should be done with this wall trim:



Unfortunately, it is not clear during the measurement at which height the width of the niche was measured, so I will probably go there tomorrow and measure again myself before relying on the 3068mm.

That definitely makes sense. Niches are often not equally wide at the front and back. Look at the profile to see how many mm it can bridge so that the screws still grip in the board.