When registering the mattress and Tempur Ergo bed frame, finding the serial number was a bit of a pain. The installers put it all together and showed us the options on the remote control, etc. We put the bedding on the bed; I was filling out warranty information and had to unbed the mattress. All the needed information was/is located under the mattress, and the frame info is non-existent. Well, at least I could not find it. I have a suggestion. Please have this information on the sales receipt along with the delivery information. That's my only bug, but It's too soon for anything else. We haven't slept on it yet.