Photo 1 of ***FACTORY SEALED**Durably support your mattress with the superior design and construction of Mainstays Fold-in-Half Metal Box Spring in Twin, Black. This Heavy Duty box spring boasts heavy-gauge premium steel bars throughout to provide comfortable, trust

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Photo 1 of ***FACTORY SEALED**Durably support your mattress with the superior design and construction of Mainstays Fold-in-Half Metal Box Spring in Twin, Black. This Heavy Duty box spring boasts heavy-gauge premium steel bars throughout to provide comfortable, trustPhoto 2 of ***FACTORY SEALED**Durably support your mattress with the superior design and construction of Mainstays Fold-in-Half Metal Box Spring in Twin, Black. This Heavy Duty box spring boasts heavy-gauge premium steel bars throughout to provide comfortable, trust