Instruction: Answer the given question by extracting information from the supporting document.

Input:
Question: Will a 74" x 50" box spring sit inside the frame?
Document: This frame would not attach to where my box spring would sit in it correctly. Once attached, the frame was not square.
This bed frame is plenty sturdy. I am a big boy and the frame is under a quality queen-sized box spring and mattress. No squeaks, groans or any indication that the frame is over matched. The price was also 50% of what local stores wanted.
As mentioned, my box spring width is 59.5" wide, and I did not have a queen box spring that was fully 60.0" wide to try fitting inside this frame. But using my tape measure, the inside width between the metal rails of my bed frame only extended out to 59.75".
Luckily, my box spring size is 59.5" in width, so my box spring easily fits inside this bed frame. I do not know how much this bed frame varies in its width from one box to the next, nor do I know this frame's maximum width when set up for a twin-sized or full-sized mattress, but this may be a deal-breaker for you if your queen-sized box spring is wider than 59.7".
If the box is torn up, dented, or damaged, use the included assembly instruction sheet to verify that you still have all the pieces and nothing fell out of the box during shipment. And verify that nothing inside the box is bent or broken; a dented or torn box may be signs that the box was dropped (either during warehouse handling at LinenSpa, during transport from LinenSpa to Amazon, during warehouse handling at Amazon, or during transport from Amazon to you) and items inside may also be damaged.
Good solid bed frame especially for the money, easy to put together and fit my queen box spring perfectly!
We ordered this frame for our guest room. It shipped very quickly and we have been very pleased. We had no issues with it fitting our queen size box spring. Overall we are very happy with this purchase!
Bed frame was 1/2 inch too short! Very disappointed. We purchased a mattress and box spring from amazon and are very happy. This bed frame is a disappointment.
I had an antique bed but the 4 supports  on the wood slats were not  holding the new box spring evenly. I installed this frame within the old slats and it worked perfectly.
My wife and I have been using this frame for a few weeks now, and we have been very pleased with how it holds up! The frame is very sturdy and doesn't creak at all with both of us on it. We use a memory foam mattress on it, and as some reviews have pointed out, if you are going to do this, you will need a box spring as well.
Answer: The frame will work with standard size beds --> from twin to queen. I don't believe 50" is a standard width..? So my guess is, probably won't work as delivered.