The WP21US provides ideal placement and alignment for mounting to wood studs, steel studs and concrete.Precision adjustment- Projector mount slides along arm for infinite projector placement- Integrated micro leveling- Lateral shift of 1.75"Integrated cable management- Aesthetic covers and inlay style cable management system conceal and protect cables for a clean finishMultiple installation options- Designed for mounting to concrete, block wall, brick, dual wood or dual steel studs. Includes hardware for mounting to wood stud and concrete wallComplete Solution- Includes short throw arm and RPA mini universal projector mount