The hybrid mechanism: A mix of both sofa mechanisms, this consists of pulling, folding, or sliding a frame out to convert the sofa into a bed. For instance, the bottom in the Report Nordby Pep Sofa Mattress slides out plus more cushions lift to create the sofa mattress surface area. https://cicerod937dnw3.rimmablog.com/30477349/the-ultimate-guide-to-queen-beds-frames-for-sale