Tree grid made of steel treated with Ferrus, a protective process for iron that guarantees high corrosion resistance.
The Ferrus treatment consists of three layers applied after shot cleaning all impurities: an electrolytic bath, an epoxy coating and a forge black polyester paint coating.
Circular openings: 18 mm which can be cut to adapt the inner Ø to the trunk dimensions as the tree grows.
A25A with 3 circular openings. A26A, A27A and A29A with 4 circular openings.
Supplied in 2 parts.