Dave Sr. from SWISCO responded:
November 9, 2016
Hmm... well, we carry the 45-036, which is a standard fiberglass screen. They call it "Charcoal" fiberglass in the industry, but it actually looks black to my eye. We also have the 47-036, which has a Charcoal Aluminum mesh. It appears to have a more blueish color coating on the aluminum wire. Most window manufacturers today use the standard fiberglass in their windows.
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