Whitmor Supreme Microwave Cart with Locking Wheels - Chrome Finish with Food Safe Cutting Board 16" x 22.5" x 34" - Kitchen Organizer for Small Spaces, Dorm Room & Apartment Essentials

My kitchen is sorely lacking in storage and counter space but luckily has just enough floor space for this small-sized cart.Assembly was quick and easy, but the resulting structure was so wobbly that I knew something was wrong. I called Whitmor customer service and learned that I'd installed the bottom shelf upside down: The surface with the edges should face down (which to me seems counterintuitive--and which the instructions do not specify). When upside down, with the edges facing up (like the pull-out shelf), the bottom shelf will not slide down over the plastic sleeves (which secures the structure) because the corner holes of the shelves (and hook assembly) are wider on the bottom than the top.After reassembly, the cart seemed sufficiently stable to support a microwave oven. Because all my outlets are over counters, this use isn't practical for me, but even after loading the pull-out shelf with numerous heavy canned goods, the cart seemed secure. Then I noticed that one side looked slightly higher than the other and realized that the wheels on the higher side had unscrewed somewhat during reassembly, so I retightened them and the cart leveled out.A note on the plastic sleeves: At first I was dubious that two flimsy pieces of plastic that don't even snap together (they just "snap" into the grooves on the poles) could possibly hold shelves securely in place. Now I get that the corner holes of the shelves hold the two plastic sleeve pieces together by sliding down over them.Overall, I'm pleased with this unit. It has a utilitarian look, the design is very practical, and it's a perfect size for my space. The pieces were all in good condition, the wood surface came nicely oiled, and the package included a few spare plastic sleeves and a tool to tighten the wheels. Customer service was easy to reach and quickly resolved my initial assembly issue (which is likely one of the most common). IMO, the assembly instructions, while definitely better than average, could be improved by describing 1) how to orient the bottom shelf and 2) how the sleeves and shelf corner holes work together to secure the structure.