Located in Frederick, Maryland and serving the greater Baltimore and Washington region, GAC has been a full service glazing contractor since 1988. We offer fabrication and installation of aluminum composite panels, architectural aluminum windows, storefronts, curtainwall, and various glass products into commercial buildings such as: office buildings, schools, churches, libraries and warehouses, as well as many other applications.

The GAC Tenant Fit-Out Division is managed by Greg Brennan. The Tenant Division specializes in all-glass entrances, art glass, transaction tops, mirrors, filming and minor storefront revisions.