Elica Ascent Urban Cooker Hood with Chimney Kit VPP10018 Tempra P 460mm Lo Carbon Tempra P 460mm Lo Carbon Single Room Heat Recovery Unit Constant Trickle speed with Pullcord Boost It comes factory set and you only need to access the dip switches if you want to change the factory settings 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