Designed to ceiling mount screens up to 50kg in either landscape or portrait orientation, the BT8424 is available in a choice of four different drop lengths; 1m, 1. 5m, 2m and 3m. The mount uses B-Tech s unique Torsion-Tilt mechanism for easy tilt up to +/-15?. Levelling screws are included on the interface arms to finely adjust the screen height and locking screws help prevent unauthorised removal of the screen. Cover plates are supplied for a neat and tidy installation.