Sub-Zero 4204490 Water Filter and Air Cartridge-7042798 Enhance the performance of your Sub-Zero refrigerator with the Sub-Zero 4204490 Water Filter and Air Cartridge-7042798 Combo Pack. Designed specifically for compatibility with select Sub-Zero models, this combo pack ensures your appliance operates with maximum efficiency. **Water Filter (4204490)**: This genuine replacement water filter delivers fresh, clean, and great-tasting water by effectively reducing contaminants and impurities. Enjoy clearer ice and improved water quality directly from your refrigerator, as this filter meets rigorous quality and durability standards set by NSF International. **Air Cartridge (7042798)**: Complementing the water filter, the included air cartridge helps maintain the freshness of your refrigerator's interior. It works to neutralize odors and filter out impurities within the air, ensuring your food retains its intended flavors and aromas. Easy to install, both the water filter and air cartridge support a healthier lifestyle while extending the lifespan of your refrigerator. Replace them as recommended to keep your Sub-Zero refrigerator performing at its best. This combo pack not only simplifies maintenance but also offers the convenience of having both essential components in one package, making it a practical choice for ensuring the quality and safety of your refrigerator's contents