The STO-A-WAY Plus mattress foundation is a premium bed base designed to replace the standard boxspring or mattress foundation. The STO-A-WAY Plus mattress foundation, developed by Seahawk Designs, Inc. and Leggett & Platt, Inc. offers a "whisper-quiet", fully adjustable Legget & Platt powerbase deck, along with the storage capabilities of the Original STO-A-WAY mattress foundation.  Similar to the Original STO-A-WAY, the STO-A-WAY Plus is designed to be placed on any standard metal bed frame, and offers up to as much storage as a six drawer dresser. The STO-A-WAY Plus is covered under the Leggett & Platt 1-2-Lifetime Warranty.  Please contact either Seahawk Designs, Inc. or Leggett & Platt, Inc. regarding specifics on warranty. (Mattress not included.)