... evenly Multi-function IR heater panel for sauna room/to manufacture infrared heater FeaturesIt is made of the high tech material which is ... general heating device, it could save 40-80%, the efficiency of electricity transforming to heat is 99% Technical information: thickness: ... :12v.24v,36v,48v,110v,220-240v wave length of the infrared:7-16um flame retardant rating:UL94V0 insulation performance:3750v ...