Surface cleaning apparatus

A surface cleaning apparatus comprising:

• (a) an air flow passage extending from a dirty air inlet to a clean air outlet and including a suction motor;
• (b) a cyclone bin assembly positioned in the air flow passage and comprising a bin first end, an opposed bin second end axially spaced apart from the bin first end in an axial direction and a cyclone bin assembly sidewall located between the bin first and second ends, the cyclone bin assembly sidewall surrounding a contiguous interior volume and comprising:
• i) a first sidewall portion extending at least nearly parallel to the axial direction and having a first width in a lateral direction generally orthogonal to the axial direction;
• ii) a second sidewall portion extending at least nearly parallel to the axial direction and having a second width in the lateral direction wherein the second width is narrower than the first width;
• iii) a third sidewall portion extending at least nearly parallel to the axial direction and disposed between the first sidewall and the second sidewall portion, the third sidewall portion having a third width in the lateral direction that is greater than the second width;
• iv) a first inclined transition portion connecting the first sidewall portion and the second sidewall portion and narrowing from the first width to the second width;
• and,
• v) a second inclined transition portion connecting the second sidewall portion and the third sidewall portion and widening from the second width to the third width.