Fix 4BELL in a compact and extra-efficient way is possible thanks to the specific 4BELL Max fastening. This device has been studied to be placed both on the floor and on the wall of ambulances, adapting itself to the equipment of the vehicle. Its special shape will totally host the transport chair, which will completely suit its structure, allowing a safe fixing also to other models of 4BELL Series equipped with optional headrest. Transport chair will be immediately and easily stored, rotating the lock red lever 90 degrees. This system avoids a wrong storage of the chair. It is manufactured with plastic material, which softens vibrations and simplify the washing. This device is an accessory of 4BELL transport chair. Suitable with standard 4BELL Series models.