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The Steel Door Institute

The Steel Door Institute (SDI) is a voluntary, unincorporated, non-profit business association formed to promote the use of steel doors and frames in the construction industry. A founding member of the Steel Door Institute, Pioneer Industries' has been certified to meet SDI standards for strength, quality, and consistency. When you specify doors and frames from Pioneer, you can be assured you will receive quality product.

Learn more about The Steel Door Institute »