The Zander hardboard cover is breathable and allows moisture to pass through to the outside.
 It provides a pleasant bee climate. Provided that beekeeping is carried out without a cover film. In addition, when using a sheet metal cover, we recommend placing a strip there so that the air can circulate. In addition, it has a cavity on one side, which can be used to insulate with the insulation plate or with the cover upside down, you have the possibility to apply feed dough.