Yes there are weight limitations. We loaded out plastic basement storage area with too heavy a load (soft drinks, adult beverages, a 5-gallon size pail I use for outdoor plumbing and electrical stuff). The plastic storage area is held in place by adhesive, caulk, and small sheet metal screws. The sheet metal screws pulled loose and then the adhesive gave out. Upon arrival, plastic bunker had sagged about 8 inches from excess weight.
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