Zephyr has been furnishing and installing commercial windows since we became a DeVac window dealer in the early 1960’s. DeVac windows are often gliders or double hung windows that serve very well in schools, hospitals and other commercial glazing applications. As building styles changed, we’ve been adapting with the times. We have become one of the area’s largest aluminum storefront, aluminum entry door and aluminum curtainwall contractor, serving the Tri-State area, Eastern Iowa, Southwest Wisconsin and Northwest Illinois. We use Tubelite and Oldcastle storefront and entry doors. With building codes incorporating 2012 IECC energy code, we have been installing more and more thermally broken doors and door frames as well as storefront and curtainwall framing with increased energy efficiency and lower u-values. We can incorporate insulated glass using low-e coatings from most of the commercial glass manufactures, including PPG Glass, Cardinal Glass and Guardian Glass.