Posh mattresses require a center support in the frame of queen and king mattresses.
Posh mattresses require a solid surface adjustable foundation, a Posh+Lavish flat foundation (available in 9”, 5” and 2” models,) a BedTech X Plat foundation, a new Tempur Pedic foundation, a new new Kluft foundation, a new Aireloom foundation, a new Stearns and Foster foundation, a slatted foundation with spacing of slats less than 3” apart or a platform bed with slats less than 3” apart.
For more details about these foundations required to satisfy your warranty, please see our warranty.

