Design Bright LED lighting shines throughout the cooking surface Duct Extension Accessory Kit Available for 9' to 11.5' Ceilings Performance Converts to Recirculation Mode with Accessory Kit (Separate Purchase Required) 8" round duct at discharge. Efficiency Blower will automatically turn on at high speed if excessive heat is sensed in the control area. Absorb odors with charcoal filters. Convenience Dishwasher-safe mesh filters make cleanup easy and convenient Convenient timer built into control from 1-60 minutes. Signal on LCD display will illuminate as a reminder to check filters for cleaning. Audible tone when select controls are pressed.