Great idea that I--duh--didn't think of. I just called them and was shocked that they said 500 lbs! Who knew? That is amazing but for them to say that they have had to test it for that.Nice looking box. I was going to put one in the Taco Wagon. Then I realized - I couldn't even reach into the bed of the truck. I'd NEVER be able to reach into a crossover.
If the manufacturer is still in business - call and see what they say.