Have ordered 20 pieces of this Wetterschutztüllen and am very happy with it. The build quality is top notch and the material used quality. Thanks to this neoprene grommets remain elastic even at extreme temperature fluctuations. So one wishes it. For the assembly, there is little to say. This looks like this: first you have the associated Antennkabel with F connectors, which are bolted to the TechniSat LNB, unscrew. Then the F-connector Unscrew the antenna cable. The weather proof is put with the narrow side via the antenna cable Next. It is recommended that the spout with rotary movements on the antenna cable to evert. The grommet as far behind push or turn that you place the F connector to screw back on the antenna cable. Then the F connector again with the respective LNB input (Hor / Low; Hor / High; Ver / Low; Ver / High) connect / screw. As a final step, the Neoprentülle on F-Connectors and LNB input push that it is completely sealed. The same approach, I recommend also present in multi-switch. Since water and voltage (14V / 18V) or current can not have liked leakage in LNB arise. Therefore, you can order and process as a preventive measure this Wetterschutztüllen.