OVENS, NAMELY, DOMESTIC COOKING OVENS, FIREPLACES, STOVES, NAMELY, SOLID FUEL BURNING STOVES, AIR CONDITIONERS, HUMIDIFIERS, PARTS OF HEATING SYSTEMS IN THE FORM OF FIREPLACE INSERTS IN THE NATURE OF SOLID FUEL BURNING STOVES, HEATING INSERTS, NAMELY, SOLID FUEL BURNING STOVES, OPEN FIREPLACES, REPLACEMENT PART AND FITTING FOR THE AFORESAID PRODUCTS