... G20 burner, stainless steel heating exchanger, motorized air amperIntake Fan&motor: YDW5.5kw*1pcExtract Fan&motor: YDW5.5kw*1pcFilter systemPe filter, ceiling filter, floor ... Roof installation typeOption: hanging or post supportingControl panelPower indicator, lighting ,fan, sanding heated,alarm HY-C sanding room