These are large bins with a capacity of 1.7 cubic feet and the ability to hold 50 lbs of stuff.  Our bins are not completely square so the top is larger than the bottom.  Here are the dimensions:Outside Height: 12 7/8"Outside Top Length x Width: 21 7/8" x 15 1/4"Outside Bottom Length x Width: 18 7/8" x 15 1/4"Inside Height: 11"Inside Top Length x Width: 19 11/16" x 14"Inside Bottom Length x Width: 18" x 12 3/16"