Great Lakes Architectural Service Systems, Incorporated or GLASS, Inc. is an Ohio based glass and glazing contractor which specializes in the aluminum doors, windows, skylights, revolving doors, flush aluminum doors, glass handrails, structural glass walls, curtainwall restoration and custom metal fabrication. GLASS, Inc. can handle all types of glass replacements and installations including mirrors, table tops, specialty insulated glass and lead (x-ray) glass. GLASS, Inc. works both with building owners as well as construction and maintenance contractors, providing the highest quality craftsmanship and materials available.