This Waterdrop WHR-140 Shower Filter Replacement is perfect for those looking to upgrade their shower's filtration system. It is compatible with Culligan WHR-140, WSH-C125, ISH-100 and HSH-C135 and is made of durable plastic material. The universal connection thread ensures easy installation and suitability for shower use. With this shower head filter, you can enjoy clean and fresh-smelling water without any irritants or impurities. The Waterdrop brand is known for its quality products, and this item is no exception. Whether you're looking to replace an old filter or simply want to improve your shower experience, this shower head filter is a great choice.  It's 2 individual sealed packs with Installation Instructions.