The hybrid mechanism: A mix of both sofa mechanisms, this involves pulling, folding, or sliding a frame out to convert the sofa into a mattress. As an example, the bottom of the Short article Nordby Pep Sofa Bed slides out plus much more cushions lift to create the sofa mattress https://marcormhwi.dbblog.net/4352595/new-step-by-step-map-for-ramp-truck-beds