Made of aluminium. Effective protection of the waterproofing membrane with the ergonomic, rounded shape of the counterweight and the front bumper. The plastic covering of the counterweight prevents any cracking of the concrete block. Ease of installation: pre-assembled unit. Stability of the system: the counterweight, that can be handled by one single person, includes an ergonomic handle, and assures the stability of the system. Optimised storage: four locating pins ensure stacking and facilitate storage of the counterweights Free circulation of the rainwater under the crossbar.
