To +1 this: it's in the instructions for every shelving unit you can buy, because it's a major safety issue regardless of construction (unless it's impracticall

To +1 this: it's in the instructions for every shelving unit you can buy, because it's a major safety issue regardless of construction (unless it's impractically deep compared to its height). It isn't the construction that makes them tip, it's the dimensions. If it doesn't warn you, it's because they assume you know the risk of things falling onto you, and/or they aren't willing to spend a tiny bit of money to warn you and provide anchoring locations/tools. Which absolutely do exist. But they're not any safer due to cutting corners on safety. IKEA deserves applause for the consistent warning and hardware.