Where does my foundation go? August 11, 2020 19:33 The foundation will fit on any standardized bed frame or platform, even the floor! Related articles Can I buy the foundation without buying a Helix Mattress? Does the Helix Mattress require a foundation? Why are the foundations an inch shorter than the mattresses? How do I assemble the Helix Foundation and how long will it take? What are the dimensions of the foundation?