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.
Sleepnumber using old box spring on the floor.
We recommend a solid surface platform bed or slats no more than 2 inches apart.
A traditional box spring won t work with a sleep number mattress.
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.
All sleep number beds are standard bed sizes and are compatible with standard sized bedroom furniture.
So why exactly can t you use your old box spring.
Unless you ve recently purchased a bed you probably haven t been thinking a lot about box springs.
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.
For beds and adjustable bases we recommend rubber caster cups to place underneath each bed leg.
Using an existing frame.
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.
But you most likely have one or some other support feature under your mattress.