sdi members
door selector tool new!
gallery of products
project gallery
specialty products
drawings
aia/gbci education
technical assistance
Steel Door Institute, Steel Door, Fire Rated Doors, Hollow Metal Door

Steel Door Institute

The #1 resource for commercial steel doors and frames

The Steel Door Institute (SDI) was established in 1954 as a voluntary, non-profit business association that develops quality and performance standards for steel doors and frames.

Representatives of SDI member companies create and publish these standards, which are made available without charge to architects and other design professionals to ensure quality and consistency of hollow metal doors and frames used in construction.

As a complete hollow metal door and frame resource, the SDI website provides all standards, an extensive set of Frequently Asked Questions, and a Gallery of Products. SDI also offers online education for AIA and GBCI credit.

SDI members are the only manufacturers certified to meet SDI’s standards for strength, quality and consistency. Each member is actively involved in committees that develop codes, fire tests, and more.

When you specify SDI member manufacturers you can be assured you will receive a product that is well-constructed, tested, and evaluated to meet your specifications.


New Door Selector Tool

The Steel Door Institute has just created a Door Selector Tool to help architects select the appropriate doors for their projects. Just answer a few basic questions and the tool will show the commonly specified performance levels and door designs for that type of opening.

DOOR SELECTOR