If you share your and where you purchased it , I can give you the exact lookup URL or phone number for that manufacturer's system.
Once you have the number, you can use it to access specific details about your product: www.mattressfirm.comhttps://www.mattressfirm.com Mattress Firm Warranty Information mattress serial number lookup
(Best option)
Look at the vertical side panels at the head or foot of the bed. If you share your and where you purchased