Two-fold sofa bed mechanism with quick opening system by pulling the backrest. The Otello model is equipped with a front foot in shaped sheet metal which, in addition to guaranteeing greater stability, offers an important and innovative design. In this version, the model is equipped, in the central part, with multi-layer beech staves of 13/15 cm width and, in the lower part, of elastic straps.The structure is made of a 30mm high resistance tube and the linkage obtained by a high thickness belt guarantees a maximum resistance to repeated openings and to the vertical load (Catas Certification). The painting is carried out with oven-baked epoxy powder.This mechanism can be combined with a spring or polyurethane mattress. The maximum length is 194 cm and the maximum height 17/18 cm.The mod. Otello is equipped with bayonets for fast fixing of backrest and armrests. Different versions of backrests are available: Simple, Pillowcase, Split bearing.