Cyclonic air treatment member and surface cleaning apparatus including the same

A cyclonic air treatment member comprising:

• (a) a cyclone having a cyclone sidewall, a cyclone first end, an opposed cyclone second end, a cyclone air inlet proximate the cyclone first end, a cyclone air outlet proximate the cyclone second end and a cyclone longitudinal axis extending from the cyclone first end to the cyclone second end, wherein a cyclone chamber is located between the cyclone first and second ends and the cyclone chamber has an outer perimeter which comprises the cyclone sidewall, the sidewall having a plurality of dirt outlets comprising first and second dirt outlet regions wherein an air flow path extends from the cyclone air inlet to the cyclone air outlet, wherein an inner surface of the cyclone sidewall is a contiguous uninterrupted surface other than the dirt outlet regions;
• and,
• (b) a dirt collection chamber external to the cyclone chamber,
• wherein each dirt outlet region extends around a portion of the perimeter of the cyclone chamber, wherein the second dirt outlet region is positioned proximate the cyclone second end, and the first dirt outlet region is positioned toward the cyclone first end relative to the second dirt outlet region, and
• wherein the first dirt outlet region is discrete from the second dirt outlet region.