Minor damage to wall; Two installation methods are available seamless nail (Minor damage to the wall no need to make holes) and drillingAway from the room looks tacky; This wall mount don't need long pole and extension cord keep room prettyUsually lower installation costs; No need for specialized tools Running through walls or laddersSave Room Space; you may save critical floor and table space by safely mounting your projector to the wall; Wall mounts are excellent for utilizing otherwise wasted wall space