Viking Chimney Style Hoods features Heavy-duty construction with professional-type size, construction, and styling combined with seamless design. Among other distinct features are Halogen lights for better visibility and efficiency. Dimmer on lights allows custom lighting - separate on/off switch allows consumer to leave dimmer at favorite position. Delay feature allows consumer to set the ventilator to shut off on its own from 10 to 30 minutes later. 12-hour timer built into ventilator controls excellent for use with Designer Series cooking products. All hoods have a heat sensor that turns the ventilator on full power when cooking temperatures reach uncomfortable levels. Adjustable duct covers (for 8' to 9' ceilings) come standard with chimney style hoods     the color matches the hood canopy finish Optional duct cover extensions extend the height of the standard duct cover by up to 12" (for 10' ceilings) This hood requires a ventilator. Please select one or both below. Brass or Chrome Rail Option (Front of Hood) must be ordered with this hood. Please select one below.