According to casper the slats on older box springs are too far apart to support the weight of a foam mattress and that lack of support can cause.
Sleepnumber using old box spring on the floor.
If the slats on your bed frame are further than 2 inches apart we recommend laying a bunkie board inside your bed frame to create a solid surface for your sleep number mattress.
If you have antique or custom furniture we want to make sure that your new bed will fit.
Using an existing frame.
All sleep number beds are standard bed sizes and are compatible with standard sized bedroom furniture.
But you most likely have one or some other support feature under your mattress.
We recommend a solid surface platform bed or slats no more than 2 inches apart.
Box springs once had metal springs inside to absorb shock but today s box springs are more often made from wood or metal and consist of a hard sturdy box that sits under the mattress and supports it.
Hi george i urge you to replace the box spring regardless especially if what you have is 7 10 years old or older.
A traditional box spring won t work with a sleep number mattress.
Do you have hardwood floors.
The sleep number mattress would come with a firm non yielding flat platform so if you do decide to use your current box spring you need to inspect it to be certain it s flat across with no soft flexible areas.
Unless you ve recently purchased a bed you probably haven t been thinking a lot about box springs.