Boost the freshness in your fridge with a complete solution for fresh water, fresh ice, fresh air and fresh food. The replacement filters in this bundle provide up to six months of freshness. Refill kit contains ULTRAWF PureSource Ultra® water filter, PureAir Ultra® air filter and PureAir® Freshness Booster™ ethylene absorber refill. It does not include the Freshness Booster™ holder. Subscribe and save today!