In this video, the Steel Door Institute (SDI) demonstrates how to install a steel door frame into masonry construction.

Other installation & troubleshooting guides can be found in English and Spanish at:
http://www.steeldoor.org/installation/

For doors and frames that are built to last, always ensure they are made by SDI member manufacturers listed here:
http://www.steeldoor.org/members/

Jump to:
01:10 Plan for the flooring
02:13 Types of frames
02:40 Install base anchors
03:18 Stand up the frame and align spreader
03:40 Set the frame plumb, level, and square
05:32 Block laying begins
06:00 Insert wire anchors
07:11 Completing the installation

See the right way to install a steel door:    • How to Install a Commercial Steel Doo...