The ultra slim window guide is a minimal loss of signal, window tightness, reliability and durability. In addition, the grommet does not deform the window seals. 17 cm adapter allowing the antenna cable to pass to the terrestrial or satellite antenna through the window. Easily lead the antenna cable outside the building without drilling holes in the walls or window frames. Just walk through the open window and then just close it. Never before has the location of the wires been so easy and fast! We recommend this solution especially for people who do not want or do not have the possibility to make openings in the walls or window frames, eg in rented flats.