The hybrid mechanism: A mix of equally sofa mechanisms, this involves pulling, folding, or sliding a frame out to convert the sofa into a bed. As an example, the bottom on the Post Nordby Pep Sofa Mattress slides out plus much more cushions raise to create the sofa bed surface. https://rowanphoep.ziblogs.com/31138107/the-fact-about-best-platform-beds-that-no-one-is-suggesting