The BT8390-ADP is an adaptor plate which allows a range of B-Tech flat screen wall and desk mounts to be fitted onto System X mounting rails. This is ideal for assembling multi-screen installations using small screens or for setting up multiple work stations in a side-by-side or back-to-back format. To attach small flat screens onto a rail, the BTV112, BTV113, BTV114, BTV502, BTV503 & BTV504 can be fitted directly to the BT8390-ADP plate, which in turn fits onto any BT8390 rail. Also compatible is the BT7399 Wall Mounting Adaptor, which allows B-Tech desk mounts to be fitted to the BT8390-ADP plate and then onto System X rails.