View 2 of AmazonBasics Mattress Foundation / Smart Box Spring for Twin XL Size Bed, Tool-Free Easy Assembly - 9-Inch, Twin XL

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View 1 of AmazonBasics Mattress Foundation / Smart Box Spring for Twin XL Size Bed, Tool-Free Easy Assembly - 9-Inch, Twin XLView 2 of AmazonBasics Mattress Foundation / Smart Box Spring for Twin XL Size Bed, Tool-Free Easy Assembly - 9-Inch, Twin XL