FAQ Knowledge Articles


On wood windows without casing, sill horns are based on the dimension beyond the frame:
Selecting standard sill horns would assume the application of BMC in the field.  For WUCAs that would mean a 1-9/16” sill horn.  For WUDHs it would mean a 1-5/16” sill horn.  For WDG Rectangles it would mean a 1-1/2" sill horn.  See detail below.
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