“I got 8 pieces of 3" leg extensions, not 8 pieces of long legs. The part number on the box does not match the ordered part number.
FWIW: these are probably unnecessary as the combined height of mattress plus frame plus elevation kit already puts the top of the mattress fairly high.
Beware: Glideaway frame legs are held together with a rather small diameter soft steel bolt. They can carry the vertical load, but cannot handle much horizontal load. The feet on these is rounded hard plastic and it may be best to use cups on hard flooring to avoid dents (hardwood, resilient) or cracks (tile) in the flooring.”
