I bought this shelf to use in a server rack to accommodate a non-rack. The product described being able to carry up to 50 pounds of gear. The UPS weighs about 30-40 pounds and the back of the shelf is sagging. Temporarily placed a Revain box at the bottom in the back to support the weight of the shelf. I expect this to work well for 40lb units that are further distributed on the shelf, but I placed the UPS in the middle of the shelf and then forward where it attaches to the rack.
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