Replacement Trim for Casement Window

A home owner from Oklahoma says:
November 3, 2018
I need replacement trim that is not a insulator but covers the casement window. The slot is 3/8 inches and each is trimmed at a 45 degree angle to frame the window like in a picture frame. What is this called. I do not think it is weatherstripping but it is some kind of fin product. Nothing on the Anderson web site as these windows are 1980 vintage.
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Paul from SWISCO responded:
November 12, 2018

Your glazing bead looks similar to our 55-303 Andersen glazing bead. See if our measurements match up with yours and let us know if this will work for you. 
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