The BT7873 is designed specifically to mount a Logitech Rally Bar or a Logitech Rally Bar Mini to a variety of B-Tech products. The mounting plate allows the video bar to be mounted above or below a screen and can be fixed to B-Tech columns (BT8380, BT8381 or BT8385), single or twin ø50mm poles using a B-Tech collar, a System X rail using a BT8390-SA, or onto a compatible flat screen wall mount using a BT7031 able Accessory Mounting Arm.