Structure in 3,6 cm thick solidwood. Uprights in 2,5 cm thick solidwood. Finish : Heat treated woods as our samples or swamp woods oil finish based on natural wax and water. Storage units : 2,5 cm thick solidwood. Optional metal finish Burnished black steel, Burnished Titano, Burnished Platino, Burnished Brass, Burnished Black Brass by hand using traditional techniques.