Brand New Sub-Zero Air Purification Cartridge 7007067 7042798 Compatible with All Models Revolutionary Filtration Freshness That Lasts Simple to Maintain Product is Non-Perishable. Based on NASA Technology, the Sub-Zero refrigerator air purification cartridge scrub the air every 20 minutes to ensure freshness! The old part was 7007067 and the new part number is 7042798. They are the same unit and will fit the same refrigerators.