This replacement range hood charcoal filter is intended for your existing vent hood to maintain a clean and fresh kitchen. When setting up the hood for non-ducted operation, use this charcoal air filter together with the BPQTAF aluminum filter (sold separately). This filter is compatible with the following range hoods: WA6500, CBD1, CBD3, CBX1, NS6500, QL1, QL100, QML, and QT20000. This package contains one (1) charcoal filter for your current kitchen range hood (sold separately). This replacement vent fan filter is engineered, tested, and certified to help your product operate at optimal performance