No threshold or level threshold means that the transition has been designed without any disruptive height difference, making the surface as level as possible. In daily life, this provides greater comfort, as it reduces the risk of tripping and makes pathways easier to navigate. Particularly with entrance doors, patio doors and sliding doors, a level threshold design creates a seamless transition between indoors and outdoors. At the same time, it is not just the height of the threshold that matters, but also the weathertightness, ease of use and a clean technical finish. Threshold-free solutions combine comfort, safety and a modern living space.