Surface: smoothly planed or fine sawnInstallation: VerticalWood type: Spruce or Pine Slatted Cladding '4 stairs' T>echnical SpecificationThickness (mm) - 35 Widths (mm) - 145 Covering widths (mm) - 135 Lengths(m)-3/3,3/3,6/3,9/4,2/4,5/4,8/51, /5,4/5,7/6 Moisture content - 18%