From Rick -
I purchased two twin adj. beds (To make a King) from you a couple of years ago and am now wondering if I could purchase one king top mattress to set on top of the two adj. frames.
I think your beds are great and I think this will make it even better.
Hi Rick,
You should be fine as long as the adjustable bases are Twin extra long. They should measure 38 X 80 inches long.