🌟 Elevate Your Freshness Game! Experience freshness every 20 minutes with advanced air purification. Easily reset reminder lights for optimal maintenance. Change every 6 months to keep your fridge smelling fresh. Utilize cutting-edge technology for superior air quality. Perfectly fits Sub-Zero models for hassle-free installation. 6-month lifespan NASA tech 20-min air scrub The GLACIER FRESH Replacement Air Purification Cartridge is designed for Sub-Zero refrigerators, utilizing NASA technology to scrub the air every 20 minutes, ensuring your food stays fresh. This 2-pack filter is compatible with multiple models and should be replaced every six months for optimal performance.