This industry comprises establishments primarily engaged in installing glass panes in prepared openings (i.e., glazing work) and other glass work for buildings. The work performed may include new work, additions, alterations, maintenance, and repairs. Installing prefabricated window units--are classified in Industry 238350, Finish Carpentry Contractors; and The replacement, repair, and/or tinting of automotive glass--are classified in U.S. Industry 811122, Automotive Glass Replacement Shops.