Usar "box spring" en una oración

1. the mattress off the box spring and lean it against the metal wall in

2. Store sheet sets in the same room as the bed, between the mattress and box spring or tucked into an underbed box

3. “Too bad these beds don’t have box springs and mattresses

4. Nick threw a box spring, followed by a mattress tossed by Val

5. To my surprise, a manila envelope that had been between the mattress and the box spring fell to the floor