Upper cover

Abstract

The top cover is characterized by having four pairs of through holes, with the first two pairs (1, 2) located at the corners of the bottom surface, and the remaining two pairs (4, 5) located on the edges of the bottom surface between the first pairs (1, 2). The bottom surface is an elongated rectangle with extensions at the through holes. Above the bottom surface, a short distance away, is the top surface, permanently connected to it and located parallel to it. On its top side, alternating sills are arranged. Their arrangement is transverse to the length of the top surface along its entire length. Additionally, the bottom surface has three sections of holes.