This Twin Uber High Loft Bed frame is top quality, designed in the U.S., made in Vietnam. It fits a standard twin size mattress and is 100% solid hardwood, in white. We were VERY impressed with the quality!
The mfr is Maxtrix and you can see the loft frame on their website, maxtrixkids.com (pic #4 is also from their site). I made some alterations (fine print, below) that will only interest you if you think you might want the bed. Asking $300. It was $1300 new, three years ago.
We're moving and can't take it with us. (Pardon the junk or painting out in the pics.) I don't think you could fit another twin underneath, lengthwise, but you could put one under in an L or T shape.
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We bought the very high loft bed because it made it comfortable for at least some adults to stand under it. Or even have a desk, comfortable chair and bookcase, whatever. I don't like bunks that have the upper bunk so low.
Also, we had high ceilings, so why not? Well, it turned out to be too high, but the lower one was too low, so I chopped about 4" off the bottom of the legs, making it about 84" tall, meaning 67" or 5' 7" height underneath. No changes to the rest of it. The length listed is 84" but the end ladder adds a few inches to that.
BUT, we also never attached the ladder, so it will need adjusting when it is assembled and attached (that's it in the box, on the right, in pic 2).
The third pic shows how far we disassembled it for sale. It comes with all the hardware and instructions. You must pick up and transport. It is partially assembled in storage near downtown.
Any questions, just reach out. Thanks for looking!