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The ITI is jointly sponsored by SMART, the International Association of Sheet Metal Air, Rail and Transportation Workers (formerly the Sheet Metal Workers’ International Association) and the Sheet Metal and Air Conditioning Contractors’ National Association (SMACNA).

ITI supports apprenticeship and advanced career training for union workers in the sheet metal industry throughout the United States and Canada. Located in Fairfax, Virginia, ITI produces a standardized sheet metal curriculum supported by a wide variety of training materials free of charge to sheet metal apprentices and journeymen.

The training programs and materials offered by ITI are the result of an employee welfare benefit plan established on May 12, 1971 to fund the training and development of apprentices and workers in the sheet metal industry. ITI provides and maintains training and retraining programs; conducts train-the-trainer programs; develops and distributes training materials designed to improve the quality of workmanship and productivity in the sheet metal industry; and investigates, researches and monitors changing technology and specialty fields to meet the ever-evolving demands of a dynamic industry.