These stainless steel door hinges are screwed onto the door leaf and frame from the outside. They ensure that the door turns and that it can be opened and closed. They are suitable for metal and timber doors and can move leaf weights of up to 120 kg. They fulfil all standards necessary for use on fire and smoke protection doors. We have a matching door hinge for each door, equipped with two or four ball-bearings and different arrangements of drill holes.