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. For instance, the bottom in the Posting Nordby Pep Sofa Bed slides out plus much more cushions carry to create the sofa mattress surface. https://spiky-dog-toys83062.educationalimpactblog.com/53080188/indicators-on-how-to-make-murphy-beds-you-should-know