The construction consists of 3 vertical columns and two crossbars placed on the following heights: 200 mm- 1pcs.,250mm- 2 pcs. and 300 mm- 2 pcs. from the rubber foundation. Crossbar fittings are put into effect with collars. The length of crossbars is 1200 mm- 1pcs., 1700mm- 1pcs.. The height of columns is 400 mm.