Van der Valk Alu rear foot ValkPro+ middle, which is a mounting system for solar panels. It is made of aluminum and has a 10-year warranty. It is suitable for flat roofs with a tilt angle of 10 degrees.

Product features: The article lists some features of the product, such as its light weight, easy installation, high stability, optimal ventilation, and resistance to corrosion. It also mentions that the product is certified by the Dutch Building Decree and the Eurocode.