Can be mounted on flat or sloped ceiling, vaulted ceiling or 90° flat against side of joist. Adjustment: Tilt down 25°, Left-right swivel range of 360°, Rotate both ways 3°. 2” Incremental Height Adjustment of 19.4” to 34.7” from ceiling to center of mounting plate for the perfect viewing angles.
https://www.amazon.com/Ceiling-Adjustable-400x400mm-CM2665-WALI/dp/B07K1L5N7H

