A removable bin for a dryer comprises a substantially circular floor portion and a wall portion. The wall portion comprises an upper portion and a lower portion. The lower portion comprises a plurality of zones arranged along a height of the lower portion and extending along a perimeter of the lower portion. Each zone defines a respective area of the lower portion. Each of the zones comprises a number of openings for drainage, and each zone has a respective density of openings. Each of the openings is defined by one or more circumferential edges, with the circumferential edges being molded. The respective density of openings in each of the zones increases towards the bottom of the bin.