D-28 - Doors, Gates and Activating Devices Contractor

California Code of Regulations
Title 16, Division 8, Article 3. Classifications

A doors, gates and activating devices contractor installs, modifies or repairs all types of residential, commercial or industrial doors including overhead or sliding door assemblies. This includes but is not limited to: wood and screen doors, metal-clad doors, glass sliding/stationary doors and frames, automatic revolving doors, hospital cubical doors and related installations, power activated doors, gates, movable sun shades/shutters, card activated equipment and other access control device and any low voltage electronic or manually operated door hardware/ device.