Small:

Overall- H: 5" W: 11 3/4"  D: 11 3/4"

Internal- H: 4 3/4" W: 10 1/4" D: 10 1/4"

Weight: 10.13lb

Medium:

Overall- H: 6" W: 15 1/4" D: 15 1/4"

Internal- H: 5 1/2" W: 13 1/2" D: 13 1/2"

Weight: 18.6lb

Large:

Overall- H: 7 1/4" W: 20" D: 20"

Internal- H: 6 3/4" W: 18" D: 18"

Weight: 32lb