Review on Versatile And Portable DIY Pet Playpen For Small Animals - LANGRIA Metal Wire Cage For Guinea Pigs, Puppies And More by Nick Kussmaul

Pros: lots of storage, easy to add on to (if you bought 2 of them), holds large storage bins, easy to put togetherCons: time consuming, flimsy (unless tethered), some of the wire arrived bent, does NOT come with the shelf liners, i would not even put books on it, definitely not for professional useIt is time consuming to put together. I zip tied it on each shelf as well for added protection from coming apart. I bought 10.5"x10.5" bins which were actually small. Could definitely have went 12"x12" for sure. It is flimsy until you either tether it to a stud in the wall or fill the bottom shelves with heavy items. Great for me because I put my office supplies on the top shelf so my son can't reach it. This is in his future playroom and I hope so use it also to sort and organize his toys.Great for basic and non-heavy items however would NOT recommend for professional, office, or book shelf use. Too flimsy for that.