They are made from rectangular tubing, with dimensions of 675x23x40mm. Assembly is done through screw fastening, ensuring each side rail is secured firmly to the crosspieces, resulting in a locked structure. Used at heights greater than 40cm.

They are made from rectangular tubing, with dimensions of 675x23x40mm. Assembly is done through screw fastening, ensuring each side rail is secured firmly to the crosspieces, resulting in a locked structure. Used at heights greater than 40cm.