DNA Wall is the retractable belt system which can be used to hold and block Spencer products. It is a tensioner which by thanks to a simple kinetic motion makes the belts ready for use at any time. DNA Wall is the best solution for having belts always ready for use and automatically stored but at the same time avoiding any interference for the operators. This extending system optimises storage of products making it easy and fast. The system is composed of three belts. Two adjustable and retractable, one fixed. DNA Wall is includes highly resistant 50 mm PP belts with rapid release buckles in nylon.