Working on the path coax will take from my radio closet to the roof. I was able to cut out the protective screen on the backside of this vent then I added some cable loom to soften the metal edge at the bottom of the vent. Next I added some explaining foam with a sticky back to make it harder for bugs to get into my attic while still allowing me to at coax when needed. The coax shown here is a just a test cable I used to make sure the connectors would clear, I will be using LMR-400 for my antennas.