H timber beam are composed of solid wood or lvl flange, and solid plywood, particle board or osb web.Bond with weathering resistant glue, coat with antiseptic and waterproof painting.H20 timber beams are widely applied in slab formwork system, wall formwork system, column formwork system, timber structures, and other temporary bearing structures. Technical information: The standard size of wood h beam: h16, h20, h24. Standard lengths: 2.45m, 2.9m, 3.0m, 3.3m, 3.6m, 3.9m, 4.9m, 5.9m. Other beam length or web thickness available on request.