The construction consists of 3 vertical columns and two different height walls made from wooden beams, which are mounted on crossbars on the following heights: 300mm/1050mm, wall height 1200mm and 500mm/1850mm, wall height 2000mm from the rubber foundation. Wooden beam lenghts are 1050mm for the low wall and 1650mm for the high wall. Crossbar fittings are put into effect with collars. The length of all crossbars is 1200 mm. The height of columns is 2000mm.