I recently replaced the gas and electric cooker. It turned out that the previous stove was placed on a kind of raised platform / plate, which was screwed to it so as to be level with the neighboring worktops. This base could not be reused, it was taken away along with the old kitchen. The new one, after insertion, is 40mm lower than the table tops, with the leveling legs fully extended. Please see the picture. My question is: can you leave it like that, and if not, what to put under the bottom of a new kitchen to raise its level? Ordinary wooden board is enough?
