The ETNA REC40 Recirculation filter filters all cooking fumes and blows clean air back into the kitchen, so you won't need a vent system in your kitchen. You can connect the filter to the motor's supply hole. This filter is compatible with the ETNA A4330CRVS, A4350TRVS, A4355TRVS, A4419TZT, A4464LRVS, AB590RVS, AB590ZT, AB560RVS, AB560ZT, ABE590LRVS, AD590RVS, and AD590ZT.
