Legs in 50 x 100 mm untreated corten steel. 210 x 50 mm pine wood boards, vacuum-pressure treated in autoclave (class 4) against woodworm, termites and insects. Stainless steel bolts. Recommended anchoring: M10 bolts to anchor to the ground, depending on the surface and the project. Note: Did you know... natural wood “breathes” i.e. it absorbs humidity and releases it in dry atmospheres. It is therefore normal for cracks to appear in wood. This has no effect whatsoever on its strength and durability. The rustiness from Corten steel evolves overtime, which means that this material sooner or later will get rusty depending on the humidity and temperature levels. OPTIONAL: Epoxy primer coating and MARSON polyester powder coated finish.