Heaters for household purposes; saunas for household purposes; far infrared warmer for household purposes, namely, plate warmers; electric blankets for household purposes; electric mats for household purposes; electric space heating apparatus for household purposes; dry-type saunas; heating elements; apparatus for heating, ventilating and air conditioning, namely, heating installations; convection heaters; sheet type heating heater; beds for sauna specially adapted for saunas; sauna heaters; ...