Amazon Basics Foldable Metal Platform Bed Frame with Tool Free Setup, 14 Inches High, Sturdy Steel Frame, No Box Spring Needed, Full, Black Amazon 106230 ratings View Product Buy it on Amazon More ...

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Adjustable bed frames allow you to tweak the width and length for a more precise fit. With an adjustable bed frame, you can also accommodate a headboard in a mismatched size.

The queen-size Koala Sofa Bed measures 70 inches wide, while the full-size is just a few inches smaller at 64 inches. When folded out, the bed matches the dimensions of a queen or full-size bed.