About Premier Mounts AST-1321
The Premier Mounts AST-1321 13-21" Adjustable-Height Ceiling Adapter allows you to adjust the height of your display on a 1.5 in. NPT and within range of 13" to 21" in 1.25". (31mm) increments.
Premier Mounts AST-1321 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
Adjusts from 13 in. to 21 in. (330-533mm) in 1.25 in. (32mm) increments
Adapts to 1.5 in. NPT