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SDI Certified

Quality is everything when it comes to steel doors and frames. They are one of the few components of buildings that people are constantly in contact with — and often provide the first impression of your building.

The Steel Door Institute has developed a new industry certification — SDI Certified. The manufacturers with this certification are regularly audited to ensure they meet our rigorous manufacturing, performance and quality standards. Design professionals can now specify SDI Certified and know the manufacturer of their doors and frames will meet the highest standards in the industry.

Many of the most respected steel door and frame manufacturers are now SDI Certified. They produce standard, custom, and specialty products distributed in 50 states and around the world.

SDI Certified Manufacturers

Ceco Door

Steel Door Manufacturers DEANSTEEL

Door Components, Steel Door Manufacturers

Mesker MPI Pioneer
Republic Security Metal Products Steelcraft  


Certification Requirements

SDI Certified manufacturers maintain compliance with the following standards below on a continuous basis:

ANSI/SDI A250.10
Test Procedure and Acceptance Criteria for Prime Painted Steel Surfaces for Steel Doors and Frames
ANSI UL 10C
Positive Pressure Fire Test
UL 1784
Standard for Air Leakage Tests
ANSI/SDI A250.4
Test Procedure and Acceptance Criteria for —
Physical Endurance for Steel Doors, Frames and Frame Anchors
ANSI/SDI A250.6
Recommended Practice for Hardware Reinforcing on Standard Steel Doors and Frames
ASTM A1008*
Standard Specification - Cold Rolled Steel Sheet
ANSI/SDI A250.3*
Procedure and Acceptance Criteria for Factory Applied Finish Coatings for Steel Doors and Frames
ASTM A653
Standard Specification Galvanized / Galvannealed
SDI 117
Manufacturing Tolerances for
Standard Steel Doors and Frames
* if offered by manufacturer