Galvanised steel treated with Ferrus, a protective process for iron that guarantees high corrosion resistance. Finished: Epoxy primer coating and black wrought iron colored polyester powder coated finish. Circular openings: 18 mm. A25A with 3 circular openings. A26A, A27A and A29A with 4 circular openings. Supplied in 2 parts. Optional: Angular metal frame, L45.