For construction use. Carry film faced plywood. Made of high-grade solid sawn Pine lumber and Pine plywood. Prefabricated wood H 20 Beams are manufactured in a range of sizes. Long lengths use fingerjoining to splice flanges and butt jointing or toothed, tongue and groove or scarf configurations to splice the webs. The actual length is limited only by transportation restrictions Weight per running meter: 5.2-5.8 kg Mechanical specification: Bending moment – max.5 Kn/m Cutting action – max 11.0KN Bending – max1/500 Live load (Bending Stiffness) – max 500 kN/m2 Length in cm 180 - 245 - 290 - 330 - 360 - 390 - 420 - 450 - 460 - 490 - 590