There are a variety of anchoring systems when it comes to mounting a commercial door frame. To make things more difficult, some anchors are more suitable for particular applications than others. Here is a brief guide to the 4 most common anchor types, and what the differences between them are.
For drywall applications, the most common anchor types are compression and stud anchors.
Compression anchors are designed to work with a knock down frame. These anchors work using a tensioning system to compress the frame against the drywall after the frame is installed.
Stud anchors are long lag bolts designed to go through the inside of the door frame and bolt into the stud beneath. For block walls builders will typically use a wire or sleeve anchor and backfill the frame with concrete.
Wire anchors or T anchors are used during the construction of a cmu wall and are placed between each of the blocks and are mortared into place. Most doors in cmu walls use a welded style door frame and are then back-filled with concrete to hold them securely.
Sleeve anchors are large toggle bolts designed to work within a concrete wall. A hole is pre-drilled and the sleeve is then placed within the wall. Outward pressure is created when the bolt is screwed into the anchor pushing the flanges outward against the sides of the hole.