AQUACREST Replacment WHR-140 Shower Water Filter, Compatible with Culligan WHR-140, WSH-C125, HSH-C135, ISH-100 Shower Water Filter Units (Pack of 3) Premium material and quality filters will bring you wonderful shower experience. Enjoy fresh water by replacing your filter every 6 months or 10,000 gallons, which will vary based on water conditions. Easy to install. For detailed instruction, please kindly refer to the Instruction Manual in the box. We strive to provide filters of high quality with reasonable price, giving you clean and fresh water. Interchangeable with WHR-140. Will fit in WSH-C125, RDSH-C115, HSH-C135, HSH-BN135, ISH-100, ISH-200, ISH-300, S-H200-C, S-H200-BN, S-W100-C, S-W100-BN. This filter is not sourced by or sponsored by Culligan. Advanced material for refreshing water Easy setup wizard Optimum results for up to 6 months or 10,000 gallons, whichever comes first will vary based on water quality