When you say mattress that is the top. Boxspring is the bottom. So im guessing you have mattress and boxspring extra long. The answer is yes. A twin extra long mattress will fit a regular twin bed frame. The length is just longer not the width.
Yes it will. Put the boxspring in first.
Two twin matresses will make a king bed but it must be put together on a king frame and boxspring.
You can add a second low profile boxspring which is 5.5 " thick.
A king boxspring is usually two twin sized. You could use a king size frame and put two twin beds on there, however that's going to leave a gap in the middle. You could use the two twin box springs and a king frame and then get a king mattress.
No it will not. You will have to tie the boxspring up on top. And put the mattress inside the van.
boxspring
not hardly :(
Yes, provided the bed has support for the mattress you can forgo the boxspring. A boxspring serves as support when there is no platform or other means available. It also gives a bit more flexibility so expect a more solid sleep.
I've been doing this for over 10 years. You will need to get a SPLIT QUEEN boxspring. It splits the boxspring in two pieces similar to a king.
Mattress thicknesses range from 6 to 18 inches in thickness. With a width of 39" & a length of 75" (in North America )
Does a boxspring come in 2 or 3 inch thickness