Square steel profile load support bar. Strong and light. Galvanically treated to prevent corrosion. A square profile load support bar is considered stronger and is therefore popular with drivers. With rubber-coated semi-circular soles at the ends. The length of the support bar is adjustable using a rack and pinion mechanism. The sole of the support bar 1 is located on a spring bush. which ensures a smooth change in length in the working position according to the movement of the roof or walls of the van during driving. that the sole of the load support bar does not damage the inner surface of the van.