Hemnes IKEA daybed. Mattresses not included you would need two to be able to open it up to a double. Has some damage meaning it can't be assembled according to instructions and you would need to use some additional brackets and woodscrews. The damage is to the second base which pulls out to make the double. Also one of the bolts and connector is missing and a wooden peg( IKEA will send you free replacements). And also some of the drawer runners get stuck and would benefit from replacing.
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