Popular Sizes:

8" (w) x 5" (s) x 10" (h)
16" (w) x 6" (s) x 12" (h)
20" (w) x 6" (s) x 16" (h)
9 " (tw) / 13"( bw) x 4" (s) x 10" (h)
16 "(tw) / 20"( bw) x 6" (s) x 12" (h)

tw= "top width" ; bw= "bottom width"
w= "width" ; h= "height" ; s= "width of side gusset"