The SYSTEMA SD4675S is a dual vertical 18" arm combination attached to a 29.5" post. This solution is part of the SYSTEMA modular range and consists of the following individual components 1 x SP75S post and 2 x SA46S display arms. Ideal for Displays up to 34” in landscape orientation or up to 22” when both displays are installed in portrait mode. The two 18" arms can be installed in a dual vertical, back-to-back or side-by-side configuration in any of the four channels on the 29.5" high post. Perfect for screen real estate demanding applications, environments that benefit from the use of larger displays and multi user environments. Touch screen compatible.