Ceredi aluminum hatches are extremely sturdy, load-bearing, walkable and watertight. They are certified, compliant with ISO 12216/2002 and have passed the pressure seal test of 14 KPa. The doors are fire painted: available colors WHITE, GRAY, BLACK. They are available in two versions with and without external hinges or on request, the 743×578 mm manhole can be supplied with a gas spring.