California · Health and Safety Code - HSC
HSC §9644: All exterior materials used for doors, window frames, skylights, gutters, downspouts, flashings or embellishment shall be of copper, copper base alloy, aluminum, stainless steel, or other corrosion re
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All exterior materials used for doors, window frames, skylights, gutters, downspouts, flashings or embellishment shall be of copper, copper base alloy, aluminum, stainless steel, or other corrosion resistant material of gauges structurally determined.
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