Athletics hurdle adjustable height with counterweight plywood bar

The adult track and field hurdle consists of legs and a hurdle bar. The hurdle legs are made of a 40x40 mm metal profile. The posts for fastening the bar are made of a 25x25 mm metal profile. The bar is made of 15 mm thick plywood, the bar width is 70 mm, the bar length is 1200 mm. The bar is painted with acrylate paint, markings are applied. The metal structure is painted using powder spraying. The hurdle has 5 levels of height adjustment with a step of 75 mm, from 770 mm to 1070 mm, the height is fixed using a screw clamp. Counterweights are installed in the hurdle legs, fixed with screw clamps.