If the frame was made from wood and was not adjustable then the queen mattress will not fit on the full size bed frame.
Can you use queen mattress on full frame.
After removing the queen size mattress and box spring push the frame inward from the foot of the mattress support to adjust its length to 75 inches.
For example a person can bolt the adapter plate to a queen headboard designed to bolt up and then simply bolt it to the full size bed frame.
The key to making this work is to make it look like it s intentional by turning it into a platform bed.
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Here s what you ll need to get it done.
Yes a queen sized mattress may fit a full size box spring.
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However it is important to check the dimensions of both the mattress and the box spring first as most have different standard sizes.
Only a queen bed frame that uses extensive cross support such as a frame that uses a large number of wooden slats would be able to support a full sized mattress.
You can get plywood or 2x4s to support the box springs and keep them from falling through.
Some metal bed frames can readjust and some cannot.
The four sided metal queen size bed frame that adjusts to variable widths is very simple to fit to a full size bed.
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However it would still leave gaps between the mattress and the side of the bed.
A king bed frame holds a mattress that is 76 inches wide and 80 inches long.
The frame will hold your bed since it s bigger but some of the frame will be sticking out.
You should also check the type of frame your box spring has.
The full size mattress would fall through the frame.
Your queen mattress is only 60 inches wide but it is also 80 inches long.
If you re upgrading from a full size mattress to queen you can easily attach your existing headboard to the larger bed frame.
It may or may not be able to adjust to a queen size.
You can buy a bunky board which fits the queen size.