Making Two Twin Mattresses Into a King Frame

Wouldn't that be two twin XL beds?

Right, Twin extra-longs are 39x80. A king is 76x80.

Don't know whether a king frame is adjustable for the 2", or whether the two twins could shmush together enough.

Since frames are so cheap compared to mattresses, just get two twins, shove them together, and be done with it.

A king is basically two twins. Just get a king size frame. The box spring and mattress will fit just fine. The box springs for a king are two twins. So the mattress shouldn't be a problem.

Have you considered a memory foam mattress? Tempur-pedic is the best known and costly but there are other brands that are cheaper-- I've used Costco's Nova-form for the past 10 years. Tempur-pedic has the famous commercial with someone jumping up and down next to a full glass of wine with no spillage...

If you place two twins next to each other, there is always going to be the uncomfortable seam between the two and the possibility that the mattresses might slide over (depending on the bed frame design) if someone rolls over right into the middle and falls into the 'valley'.

The arrangement hc6219 is asking about is commonly called "split king".

Box springs for king are often made of two parts anyway, for moving purposes because they don't flex the way a mattress does.

There are "T" connectors used to bridge two twin XLs (NOT regular twin; too short) to bridge the gap in "split king" configurations.

Read up on innerspring coil mattress construction. There are four types. The one called something like "pocket coil" mostly isolates movement to the particular spring one is on ... so hardly any partner disturbance, until you throw a roll-over punch. Or snore.

Housing developers are now building master bedroom suites with "snore rooms", for people who hate their spouses and want to convince visitors that they're only sleeping separately for snoring reasons.

C0lumbia C0unty? How big is your bed of hay?

If two people aren't sleeping on separate sides most of the time, forget about it. No matter what you do, no matter how many kits, and how much pressing, there is a gap there that gets wider over the course of the night.

In Europe, king beds are 2 long single size mattresses together on fancy curved slats in a frame. They never separate. No gap. We moved ours home from Europe, it's 20 years old and still perfect. Why are we always decades behind Europe?