The Klammelisten, 0728—also known as drag strips—is primarily used as a sealing solution for folding and sliding doors where traditional weatherstripping is not suitable. They are typically installed at the bottom of the door and fit snugly against the floor or a threshold to minimize drafts, dust, and noise. The strips are flexible and adapt to the surface as the door opens and closes, making them ideal for areas with moving doors and varying surfaces.