Keep your refrigerator performing at its best with this Frigidaire filter combo pack, including both the ULTRAWF water filter and PAULTRA air filter. This combination is designed for select refrigerators that require both water purification and air odor control, helping maintain clean water and a fresher refrigerator environment. This set is an exact replacement for ULTRAWF water filters and PAULTRA air filters only. Compatibility is determined by the filter type used in your refrigerator, not by appearance alone. Many refrigerators use different filter models that look similar but are not interchangeable. To prevent incorrect purchases, customers should first confirm their refrigerator model and current filter type before ordering. This combo pack is not universal and will not fit models requiring other filter types such as WF3CB, EPTWFU01, or alternative configurations. Additionally, customers should verify whether their refrigerator requires both a water filter and an air filter. Some units only use one filter type, and purchasing a combo pack without confirming requirements may lead to unnecessary returns. This filter set is compatible with a wide range of select Frigidaire refrigerators. Always confirm your model number and filter type before purchasing to ensure proper fit and performance. Designed for easy installation, both filters can be replaced without tools. For best results, filters should be changed approximately every six months to maintain water quality and odor control.