For the past three years, the National Association of the Remodeling Industry has conducted a member profile study.
Kolbe & Kolbe
The company now offers copper cladding on many of its windows and doors. The cladding used is natural and unfinished. Sash are .020 inch thick; frames and doors are .025 inch. Units with Simulated divided lites have a .025-inch-thick copper Simulite bar. The cladding patinas naturally over time.
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