We were extremely disappointed in the cardboard shelving units. The cardboard was somewhat warped, the tabs to be inserted in the slots were only 1/4" long and would not hold. after about an hour we got one somewhat together, but the shelves were flimsy. we called and were told a return shipping label would be e-mailed to us and our shipping would be refunded along with the price of the shelves. several hrs later, we received an e-mail from the guy and it sounds as tho' he was re-nigging. We told him if he did we would go on every from of social media and tell everyone what we think of the product;