Themobend Elite 120 working length: 3050 mm 2 power pack: 30 amp 380V Each Heater Beam incorporates 8 individually tensioned, low voltage resistance heating wires. 4 are located below the material to be heated and 4 above. Heating wires are fully adjustable for spacing and height, enabling materials from 1-25mm to be heated. The video below the thumbnails shows the working principle.