rick,they are a standard broccoli box here!! i'd ship you some over,but the cost would be crazy!!i;m delivering building steel to a new section of a hospital site,..,the inward /outward goods store gives me the the thick walled poly boxes,over a foot and a quarter square,much easier on the spine!!!i also get some 3/4 foot square[im trying to explain outside of our metric sizes],.,.i put laminating paper over the top and hold it in place on the poly with tacks[great hothouse]!!--anthony