This is a split king bed frame which is really 2 individual frames. There are hinge pieces that can attached to king headboard so that when mounted each side will swing out.
OR... You can use 2 twin long box springs with a king mattress on top.
OR... The can be used as individual bed frames and adjusted from about 38" to about 53" wide.
Pictured is only one of the two frames. It is not adjustable in height which is about 7-1/2" when the frame is on it's 4" castor wheels. The plastic guide sockets (inexpensive) could use replacement but it works 'as is'.
I would be happy to meet you near downtown Cookeville TN if you are interested.
Thanks for looking.