For the 3,5 mm Polyester type of Liderkit Group the sidewalls are made of polyester reinforced with fiberglass 3,5 mm thick. This polyester plate is internally reinforced with vertical aluminum omega profiles.
In contrast to aluminum kits, the sidewalls of the polyester kits present a single external surface (not divided into sheets).
External profiles consist of ”2 pieces” allowing the absence of any kind of rivets or visible sealing on the external surface.
This kit is an alternative to the aluminum kit. It has a similar weight and a much easier repairing.