box spring

A box spring, leaning on its side against the open door of an empty refrigerator, blocked one corner of the room.

To minimize exposure, use dust-mite covers for your pillows, mattress, box spring and duvets.

Smith did not own a gun, but police found the knife between his mattress and box spring.

While Smith didn’t own a gun, the police did find a knife hidden between Smith’s mattress and box spring.

The rest of us went to bed on the box spring.