By executing Tree Guards in Corten steel too, a comprehensive, harmonious whole is created with the Tree Grilles Corten. The Tree Guard Outline optimally blends transparency and rigidity. The Tree Guard Carré is square in shape and can only be combined with Tree Grilles Square. The Tree Guard Solid combines a robust design with a wooden Solid top-slat made of hardwood. A sturdy tree guard in the Solid Series. All Tree Guards come with the Guardlock® mounting system. This smart system creates an elegantly detailed and solid connection between the tree guard and the grille without visible fasteners.