the headboard is for a queen size bed.
The MALM already has a headboard. Problem is it is a hollow core so putting screws in it will be impossible and the existing headboard is an integral part of the bed's frame structure so replacing it could be difficult.
I have the Malm bed, it came with a headboard. The headboard is a functional part of the bed, the new headboard would have to be substantial enough to bear full weight. If the new headboard is solid, then screwing into it shouldn't be a problem.
