4 wings plain patio door, 2 fixed side wings and 2 central wings sliding externally and opening oppositely. Mirror-polished AISI 316L stainless steel frame and wings. AISI 316 stainless steel upper crossbeam containing the wings movement mechanism (motor, belt and rails). Painted cover removable for inspection. Certificated monolithic glasses, 12 mm thick, colour Europe grey. External installation – 24V power supply. Electronic control panel and anti-crushing photocell. Manual opening system which might be operated by means of a cable in case of emergency. The horizontal edges of both fixed and sliding glasses are aligned above and below. Water tightness of the door while the boat is sailing is assured by a patented mobile frame which is operated by a manually removable lever positioned on inner doorjambs and pressing on gaskets. The frame is also supplied with a sensor enabling and disabling the automatic opening of wings.