Compatibility: Fits PureSource 3 ultra-water filtration type systems | Filtration capabilities: Carbon technology absorbs bad tastes and odors for better tasting drinking water and ice cubes | Easy installation: Lets you push into the filter housing until it locks | Certifications: Certified by NSF and is compliant with the NSF 42 standard; Certified by Frigidaire as a value replacement for PureSource Ultra ULTRAWF and PureSource WF3CB | Great value: Replacement water filter for various Frigidaire brands