About This INSINKERATOR F-1000 REPLACEMENT WATER FILTER CARTRIDGE: 11.75-inch by 2.25-inch F-1000 chlorine filter for water with 500-gallon capacity; compatible with F-3000S, F-2000S, and F-1000S water filter systems EFFECTIVE FILTRATION: Under sink water filter replacement cartridge that reduces particulates and chlorine taste and odor to help improve the taste of beverages EASY DIY FILTER CHANGE: Drinking water filter to use with water filter system (sold separately) featuring quick-connect fitting and twist-and-lock design for fast and easy filter changes, automatically shutting off water flow during filter replacement LONG-LASTING FILTERS: Replacement of water filter every six months at rated capacity recommended for optimal performance of water filter system, or sooner if a noticeable reduction in flow-rate occurs "Subscribe and Save" program including convenient replacement reminders available for INSINKERATOR drinking water filter cartridge replacement Overview Material : Plastic Product Dimensions : 4.25"D x 4.75"W x 13.25"H Item Weight : 1 Pounds External Testing Certification : NSF Product Benefits : ENJOY BETTER TASTING WATER: The F-1000 filter is designed to reduce particulates, and the unpleasant taste and smell that chlorine adds to tap water. ENJOY BETTER TASTING WATER: The F-1000 filter is designed to reduce particulates, and the unpleasant taste and smell that chlorine adds to tap water.