Legrand Arteor Support Frame 2 to 4 Module 4 x 4

I used this Legrand Arteor Graphite series for the whole house when I renovated it. The design and quality are great.
The tolerance of plastic parts are perfect resulting in tight fit and easy installation. The quality of the plastic is very durable. I had to remove and reattach the front plates for a couple of times for several places and the catches did not break. However, the switch itself must be kept dust free or they can be stuck.