A:AnswerHello, The AK9028AS hood would use 6" round ducting. You may view more detailed information on the Zephyr web site here: https://zephyronline.com/product/vortex-range-hood-insert-energy-star/ Thank you for your inquiry! - Zephyr
A:AnswerHello, The vortex is an insert ventilation system that is inserted in to a upper cabinet or a custom canopy/ Is measures 28 3/8 " and has an optional Recirculation Kit that can be added to make it ductless. It does not come in white- an insert is meant to be nearly hidden inside a canopy or cabinet. You may view more details here: http://docs.zephyronline.com/docs/specs/vortex_specs.pdf
Thank you for your inquiry!
