Provides quality service to all types of doors, locking hardware, automatic assist operators, and building envelope and façade issues. Cuts, fits and installs glass in wooden and metal frames for a variety of purposes, including glass doors, windows, mirrors, storefronts, aquariums, display cases, skylights and glass building exteriors, technically known as curtain walls. Installs new and services existing locking hardware and pivot assemblies for aluminum frame, tempered, hollow metal, revolving, sliding, grille, and roll up door systems. Installs new and services existing automatic sliding, push, and revolving door systems meeting or exceeding ANSI standards.