QWhat is the expected system’s service life of a DurkeeSox system? A DurkeeSox system’s practical service life depends on the application environment, AC system, etc. Generally, the service life of NanoSox -N fabric duct systems exceed 20 years, NanoSox -L 15 years, FiberSox 10 years. Our warranty for NanoSox -N is 15 years, NanoSox -L10 years,…