SOUTH SIOUX CITY — Exploring new opportunities for growth is something executives at Gerkin Windows and Doors have always been open to. That’s one reason why the 85-year-old South Sioux City ...
SOUTH SIOUX CITY - Last fall, Gerkin Windows & Doors rolled out a new single-hung aluminum window. But the South Sioux City manufacturer couldn't begin production of a second new aluminum product - a ...
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