This mount provides the strong support need for mounting heavy LCD/CRT projectors. Independent roll, pitch and yaw adjustments for quick and precise projector registration. Multiple installation options flush mount to ceiling, use 0.5" threaded rods, use a 1.5" NPT extension column. Quick connect/disconnect for convenient lamp and filter access on most projectors. Cable management through top of the mount without additional accessories. To flush mount the VCM.