Abstract: A wainscot or panel for boarding of vertical surfaces consists of a plurality of lengthwise in parallel with each other mounted fillets or boards (1) which, with the side thereof facing said surface, are located on a support structure holding together said fillets or boards, which are sawn such that the angle between the flat sides of each fillet or board and the annual rings in the surfaces of said flat sides is 45-90°, preferably 60-90°, and which are mounted standing upright and held in position by means of mounting means (4) only at the end portions (1c, 1d) of said panel fillets or panel boards.