A separator assembly for removing dirt from an air flow in a suction cleaner, the separator assembly including: a first cyclone assembly including a first cyclone separator for separating coarse dirt from an air flow, the separator including a filter for blocking the passage of coarse dirt from the first cyclone separator, and a second cyclone assembly including a plurality of second cyclone separators arranged fluidly in parallel for separating fine dirt from an air flow, each providing a body with a cyclone inlet (160a, 160b) towards an upper end and a dirt outlet (172a, 172b) formed at a lower end; and a sealing plate that surrounds a portion of each of the second cyclone separators, configured such that each of the second cyclone separators extends through a respective opening defined in the sealing plate so that the dirt outlets (172a, 172b) of the second cyclone separators lie in a shared plane below the sealing plate and the cyclone inlets lie above the sealing plate, wherein a flow path is defined between the filter of the first cyclone separator through which air is drawn from the first cyclone separator, to the inlets of the second cyclone separators, at least a portion of the flow path being bounded by at least a portion of an upper surface of the sealing plate, characterised in that the second cyclone separators comprise a first set of cyclone separators and a second set of cyclone separators, the cyclone separators of each set being arranged about the central axis, and configured such that: the cyclone separators of the first set are spaced radially from the axis by a distance that is smaller than those of the second set, and the dirt outlets of the first set are disposed at a position further below the sealing plate than those of the second set. a first cyclone assembly including a first cyclone separator for separating coarse dirt from an air flow, the separator including a filter for blocking the passage of coarse dirt from the first cyclone separator, and a second cyclone assembly including a plurality of second cyclone separators arranged fluidly in parallel for separating fine dirt from an air flow, each providing a body with a cyclone inlet (160a, 160b) towards an upper end and a dirt outlet (172a, 172b) formed at a lower end; and a sealing plate that surrounds a portion of each of the second cyclone separators, configured such that each of the second cyclone separators extends through a respective opening defined in the sealing plate so that the dirt outlets (172a, 172b) of the second cyclone separators lie in a shared plane below the sealing plate and the cyclone inlets lie above the sealing plate, wherein a flow path is defined between the filter of the first cyclone separator through which air is drawn from the first cyclone separator, to the inlets of the second cyclone separators, at least a portion of the flow path being bounded by at least a portion of an upper surface of the sealing plate, characterised in that the second cyclone separators comprise a first set of cyclone separators and a second set of cyclone separators, the cyclone separators of each set being arranged about the central axis, and configured such that: the cyclone separators of the first set are spaced radially from the axis by a distance that is smaller than those of the second set, and the dirt outlets of the first set are disposed at a position further below the sealing plate than those of the second set. the cyclone separators of the first set are spaced radially from the axis by a distance that is smaller than those of the second set, and the dirt outlets of the first set are disposed at a position further below the sealing plate than those of the second set.