Zinc plate with adhesive backing for galvanic cathodic protection against the corrosion of steel structures exposed to atmospheric conditions. TECHNICAL DATA: Thickness of plate: 0.80 mm. Height: – MAPESHIELD S 100: 10 cm; – MAPESHIELD S 200: 20 cm; – MAPESHIELD S 300: 30 cm. Weight: 0.70 kg/m² ± 5%. Storage: 12 months. Application: on the surface of metal structures. Packaging: – MAPESHIELD S 100: boxes containing 5 10 cm x 50 m rolls; – MAPESHIELD S 200: boxes containing 3 20 cm x 50 m rolls; – MAPESHIELD S 300: boxes containing 2 30 cm x 50 m rolls.