I have two of these large storage containers (130 gallon). They are about 8-10 years old. The older one holds pool chemicals and the arms and lifter arm had corroded due to the pool chemicals. I contacted the company in hope they still have replacement parts. Not only did they have the replacements but the sent them to me free of charge!  I didn't ask for them for free and I did ask what the cost would be. Maybe it is included in their warranty but they certainly could have said no because of the reason they went bad. Both boxes exteriors still look great and this company, by standing behind their products, made them a great purchase.