This adjustable-height suspension adapter allows you to adjust the height of your display on a 1.5 in. NPT and within a range of 13 inch to 21 in. in 1.25 in. (31mm) increments.Features- Can be installed on a wood stud or concrete ceiling structure- Multiple attachment points adapt to a single stud or a 4.5" bolt pattern- Works with flat-panel mounts and projector mounts- Adapts to 1.5 in. NPT- Adjusts from 13 in. to 21 in. (330-533mm) in 1.25 in. (32mm) increments