Protective foil for backgrounds made of aluminum with a natural gloss and textured finish. Ideal for isolating surfaces from moisture and wear in the kitchen or laundry room. This model is specific for 18 mm thick boards or surfaces and includes a flange square section front, with a 12 mm bottom entry. The sheet measures 564 mm x 510 mm and includes lateral fastening tabs, made of plastic, which allow a perfect coupling to the internal space and also prevent the passage of dust and liquids. The packaging is made in 20 units.