Optional 36-Inch Non-Duct Kit For Broan Elite E60 And E64 Series Range Hoods In Stainless Steel When Venting To The Exterior Of The Home Is Not Possible, The E60000 And E64000 Professional Hoods Can Be Installed With A Non-Duct Recirculation Option. You Can Still Have The Beauty Of A Professional Style Range Hood And Create A Custom Look.