the height of Zulin Timber Beam H20 is 200mm (the height of wings is 40mm, height of web is 120mm (total height is 200mm).The width of the wings is 80mm, and the thickness of the web is 27mm. Wings - the wings is made of spruce wood (spruce wood is from Ireland) Web - the web is made of cottonwood plywood Glue - The glue for the layers in web is WBP, and the glue which connects web and wings is Urea-formaldehyde Glue.