Not all bed frames are rated to the same load. Many upholstered bed frames are built on MDF or chipboard internal structures that begin to flex under sustained loads above 150–200kg. The DHS king size wooden bed frame is constructed from solid pine with twelve evenly spaced wooden slats and is rated to 250kg — the combined weight of two adults at or above the average for UK adults. At 208cm x 158cm, it accommodates a standard 5ft king mattress. The Shaker-style slatted headboard and footboard form part of the structural frame, contributing to rigidity rather than being decorative additions.