I bought this drum cover to close the switch on an outdoor unit used during a snowfall. It wasn't really practical last winter as I didn't get the switch cover until spring started (not that I'm complaining about the snow melt), but the way it was used gave me confidence that it would hold up . Change dust and moisture as much as I need. The material isn't the strongest, but I don't need a strong switch cover either. If you're looking for something affordable to protect your switches, this is a great option.