Formed by a 23 mm thick internal laminate vertical beading and 23 mm thick horizontal beads on the external side. Black concealed hinges, black chemical anchoring, espagnolette with a black locking device, protective border of copper and panel shutter stop with automatic locking.

Painting with an impregnating agent or a water-based monocomponent paint consists of 3 different phases:
- the first phase consists in the application of a transparent or colored fungicide impregnating agent by immersion and drying process at a constant temperature;
- the second phase consists in the application of a thixotropic water-based coating with an air-pressure sprayer to protect doors and windows from UV radiation, drying process at a constant temperature, sanding with an automatic sanding machine and final wiping with inspection of the pieces;
- the third phase consists in the application of a moist film of thixotropic water-based finish with an air-pressure sprayer in the quantity of 300 microns, drying process at a constant temperature, final inspection of the pieces.