Hi Linda, Is it for a bed or another furniture?
Can you give us more information please...
I have small 2nd bedroom with small bed. Second bed pulls out from under and this makes king size bed. I don't want big headboard screwed to wall. Trying to think of solution to have permanent headboard for single bed that could perhaps old out slide out ect
Why do you want you headboard to "extend"? Not quite understanding what you want to do. Please add more information for some helpful answers!
What you have is called a TRUNDLE Bed. I had one for my daughter and used it when she had a friend stay overnight. Since it is a temporary bed, and smaller than the trundle top bed, why bother?