The hybrid mechanism: A mix of both equally sofa mechanisms, this requires pulling, folding, or sliding a frame out to transform the sofa into a mattress. For example, the bottom with the Posting Nordby Pep Sofa Bed slides out and much more cushions elevate to create the sofa bed area. https://richardo565fpb3.thechapblog.com/30415947/new-step-by-step-map-for-cheap-beds-for-sale