Handcraft finishing created by Roberto Santi for De Castelli for indoor and outdoor use. It consists in the oxidation of the aluminum, which gives particular chromatic effects, similar to the concrete. For De Castelli products, the surface is transparent varnished. Differences compared to the sample provided are not to be considered as a manufacturing defect, but as a feature of the manual processing, that may be susceptible to variances in color and homogeneity. If placed outside, the finishing can experience dissimilar color alterations, which should not be considered faults. For cleaning and maintenance only use a cotton cloth dampened with water or specific neutral products for varnished surfaces. Do not use abrasive cloths, solvents, alcohol or strong detergents. Dry the surface thoroughly in case of standing water.