Associations & Licensing


DCI Hollow Metal | Steel Door Institute
Steel Door Institute

Steel Door Institute (SDI) is a non-profit business association that promotes the use of steel doors and frames in the construction industry. Through continuous, rigorous testing, SDI sets standards for the performance, care and use of steel doors and frames. These standards, known as the Fact File, are used by architects and construction professionals in the United States and throughout the world.

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DCI Hollow Metal | DHI Door Security + Safety Professionals
Door and Hardware Institute

The Door and Hardware Institute (DHI) is the only professional association dedicated to the Architectural Openings Industry. With the purpose of advancing life safety and security within the built environment, DHI represents the North American openings marketplace as the advocate and primary resource for information, professional development and certification.

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DCI Hollow Metal | Construction Specification Institute
Construction Specification Institute

CSI is a national association dedicated to creating standards and formats to improve construction documents and project delivery. Its members are a cross section of specifiers, architects, engineers, contractors and building materials suppliers. CSI is renowned in the industry for its rigorous certification programs for professionals.

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DCI Hollow Metal | National Fire Protection Agency
National Fire Protection Agency

The mission of the international nonprofit NFPA, established in 1896, is to reduce the worldwide burden of fire and other hazards on the quality of life by providing and advocating consensus codes and standards, research, training, and education. NFPA develops, publishes, and disseminates more than 300 consensus codes and standards intended to minimize the possibility and effects of fire and other risks.

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DCI Hollow Metal | National Association of Architectural Metal Manufacturers
National Association of Architectural Metal Manufacturers

The National Association of Architectural Metal Manufacturers (NAAMM) is the trade association representing manufacturers of a wide range of metal products used chiefly in commercial and industrial building construction.

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DCI Hollow Metal | Intertek

The Warnock Hersey Mark (WH) is North America’s leading product safety and performance mark for building and construction products. Products bearing the WH Mark indicate compliance to relevant building codes, association criteria, and product safety and performance standards. The mark also signifies that the product’s manufacturing site(s) undergo periodic follow-up inspections to ensure ongoing compliance of the originally certified product.

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DCI Hollow Metal | Underwriters Laboratories
Underwriters Laboratories

Underwriters Laboratories® (UL) is an independent product safety certification organization that has been testing products and writing standards for safety for more than a century. UL evaluates more than 19,000 types of products, components, materials and systems annually with 20 billion UL Marks appearing on 72,000 manufacturers’ products each year.

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