Twin tube IR emitter is made up of 8-shape high-purity clear quartz twin tube, each tube has Heating Coil of Tungsten material which runs in U shape in the tube which is filled with halogen gas.Power Density up to 150KW/m2 is achieved. Heating up and cooling down time is approximately one second. There are two standard sizes 11 mm x 23 mm and 15 mm x 33 mm in cross section for twin tube short wave IR radiators, and the maximum length available is 4000 mm