I have a 27inch international mid duty.
Im pretty rough on it.
Push over rough floors about the same as a gravel parking lot, ram **** with it, push **** with it, its been up/down a 1inch drop between building transitions prob 1000+ times, carried around with fork lifts 100's times, fell over once landed on bottom drawer, bent it a bit, screwed the slides but its not bent enough that it dosent work. Quite often i put 50-100lbs of stuff to transport to and from the shop.
The box weighs 575lb loaded. (I think)
Only upgrades i did was 3/4 inch plywood on the bottom bolted with grade 8 bolts using the caster holes, and 900lb rated casters.
The box still functions perfectly. Im very happy with it.
