Refrigerators and freezers for household use and replacement parts and fittings therefor; Cooking ranges; Gas stoves; Electric stoves; Washers for water taps; Microwave heaters for sealing containers and joining ceramic parts; Structural framework sold as parts of ovens; Air filters for air conditioners in vehicle passenger compartments; Hot water heating installations; Safety accessories for gas pipes, namely, flashback arrestors and reverse flow check valves