The exterior cover:

An aluminium protective shield able to make the fixture strong and durable, improving the insulating and thermo-acoustic characteristics and minimizing the maintenance.

The corners of the aluminium frame can be mechanically coupled through a universal corner joint or they can be welded.

The welding and the following coating are accomplished according to the most modern anticorrosion standards and UV protection, in order to completely protect corners and enhance the aesthetics of the finished product.