If I understand your question correctly and I believe I am, the lens is a thermal lens and the black foam is necessary to make it thermal it provides an opening for air to be trapped between the two. If it was not on the lens, then the mask technically would not be a true thermal lens.
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Originally Posted by lmartin
i think you will be fine. Fed Ex was always good to me until my wifes dog bit the driver. they usually don't avoid you unless they have a reason.