Can you use a full size box spring beside a queen size mattress and frame? ...


Answers:    IF YOU DONT MIND THE QUEEN SIZE HANGING OVER THE EDGES, AND POSSIBLY DAMAGING IT DUE TO BENDING, ALSO A DANGER OF FALLING OUT OF BED IF YOU GET TOO CLOSE TO THE EDGE
THEN YOU CAN
No, the queen mattress will hang over the full size box springs.