ECO HEATER S400/NA400S Room Heater Silent-flow natural heating technology  No Fan! Wall-mounted electric convection space heaters that use less than 1/3 of the energy typical space heaters use. An environmentally-responsible alternative to 1,500 watt space heaters. Less than 24 inches, and are mounted 3/4 inches off the wall to create a convection heat channel. The air between the wall and the panel is heated and rises, drawing cool air from the floor, thus silently circulating warm air throughout the room. Easy to install. Can be painted to match any dcor. Plugs into a standard outlet. Canadian model in bi-lingual packaging available (C400S). UL 2021 certified by Intertek (ETL).