i make incubators (yogurt, cheese) and solar ovens out of large-ish styrofoam boxes and i've wound up with one more than i can use. interior dimension, roughly 11 1/2" x 11" x 14 1/2". in a previous life it held Omaha Steak products and it most recently kept a decent chunk of dry ice for 8 hours. PM me if you can put it to good use.