Two-fold sofa bed mechanism with a quick opening system. The Otello H20 Straps model allows the use of mattresses with a height of 20/21 cm and a length of 195 cm for a bed with maximum comfort. The straps make the sofa seating comfortable. The 30 mm tubular structure and high-resistance linkages ensure solidity and reliability. The mechanism has obtained CATAS CERTIFICATION: Vertical fatigue strength - Vertical static load EN 1725:1998; Mechanism durability test EN 13759:2012 (20,000 cycles - Hospitality); Seat and back fatigue strength EN 1728:2012+AC:2013; Vertical fatigue strength of the base ISO 19833:2018,
- TUBES. The mechanism is made of round, square, and rectangular profiled tubes in DC01 steel, welded and calibrated, produced according to EN 10305-3 standard, for furniture use, in various sections 20x20, 20x10, from Ø16 to Ø30 and thicknesses from 1.2 to 1.35 mm.
- SPRINGS. The springs used are extension springs of various sizes, made of silicon spring steel with high carbon content and high yield strength. Finish: white galvanized or black burnished. Standard UNI EN ISO 13906.
- ELECTRO-WELDED BED BASE. The sleeping surface ensures continuity between the three different panels that compose it. The panels, made of electro-welded mesh, are supported by seven steel tubes Ø25, Ø30. The electro-welded mesh panels are made with Ø3.8 mm steel wire, projection welded electrically with horizontal and vertical spacing of approximately 70 mm.
- STRAP SEATING. The sofa seat corresponds to the end section of the bed base and is made with elastic straps. These have variable length, 50 mm width, made of 55% polypropylene fibers and 45% natural rubber. Softer and more comfortable seating.
- PAINTING. The finish is Metallic Gunmetal color, made with thermosetting powder based on epoxy and polyester resins. Oven-cured at 280°, it has a glossy decorative effect and mechanical resistance to scratches and abrasion. The mechanism has obtained the SALT SPRAY RESISTANCE TEST certification ISO 9227:2017. The coating is intended for indoor use.