Turn off Water Supply2.
Install new filter in head and turn till locked. Performance:Reduces Bad Taste/ Odor, Chlorine, Sediment, Rust, and Particulates.Compatible with:Insinkerator F-201Insinkerator F201Insinkerator F201RInsinkerator F201-RInsinkerator F-201-RInsinkerator Series 1100Disclaimer: Do not use the filter with water that is microbiologically unsafe or of unknown quantity.