The hybrid mechanism: A combination of the two sofa mechanisms, this requires pulling, folding, or sliding a frame out to convert the sofa into a mattress. One example is, the bottom on the Post Nordby Pep Sofa Bed slides out plus much more cushions elevate to create the sofa bed https://sandrak888gbn6.angelinsblog.com/30445490/new-step-by-step-map-for-cheap-beds-for-sale