Elica Ascent Urban Cooker Hood with Chimney Kit Colour:Iron Effect Humidstat fans have a sensor Humidstat fans have a sensor in them Clutch releases when the flare is complete to prevent over compression wall mounted hood which can be used in both a ducted or recirculating configuration (you will also need an optional additional filter for this installation either the standard charcoal filter available here or the super efficient regenerable filter available here) The Acsent Urban is available in two contemporary finishes zinc coated effected or iron effect and comes complete with an aluminium grease filter and a chimney