We paired the double railing with the Ikea Flaxa bed which does not use a boxspring. We simply wedged the railing between the bed and the frame. It is not as secure as strapping the rails to a boxspring but it definitely works and is just fine for now. We solely want it to keep our son from falling out of bed rather than "protecting" him while horseplaying in bed. It does the job and works just fine. It would be nice if the description mentioned the rails are built for use with a boxspring, but after reading another review stating they "made it work"; we decided to purchase. We are pleased with the purchase as it is a short-term solution until it is no longer needed by our 2.5 year old son.
My 10 year old put this together for me. Anchoring it to the bed is also very easy. The rail locks nicely and feels sturdy. Trusting it to hold back a late night roll over for sure.
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