H 20 Beam, also called H 20 wood beam, the wooden flanges are made of chemically treated, with length; 1.9mm, 2.9mm,3.9mm, 4.9mm, and 5.9mm. the thickness of the web:22mm, 27mm, 28mm, 30mm with head Plastic protective cap. Use of concrete support H beams for all type of Construction. ( we produce special thickness depend on request ).