Photo 1 of Zinus 9 Inch Twin WonderBox(TM) Smart Box Spring, Quick Assembly Mattress Foundation, Durable Metal Frame, Grey

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Photo 1 of Zinus 9 Inch Twin WonderBox(TM) Smart Box Spring, Quick Assembly Mattress Foundation, Durable Metal Frame, GreyPhoto 2 of Zinus 9 Inch Twin WonderBox(TM) Smart Box Spring, Quick Assembly Mattress Foundation, Durable Metal Frame, GreyPhoto 3 of Zinus 9 Inch Twin WonderBox(TM) Smart Box Spring, Quick Assembly Mattress Foundation, Durable Metal Frame, Grey