The hybrid mechanism: A mix of each sofa mechanisms, this includes pulling, folding, or sliding a frame out to convert the sofa into a mattress. Such as, the bottom in the Article Nordby Pep Sofa Bed slides out and even more cushions elevate to create the sofa mattress surface area. https://edgarywxro.smblogsites.com/31022100/rumored-buzz-on-bunk-beds-with-a-queen-bottom