This 40" slat rail allows mounting of multiple displays simultaneously. It adds another slat rail and easily installs to your existing Slat Rail with Posts (DMSWKITTAA), sold separately, so you can install more monitors in your workspace. Monitors are elevated above the desktop, which frees up precious workspace. You can also slide the monitors along grooves and then adjust the viewing angle for optimal ergonomics. Grooves on both sides of the slat rail accommodate independently adjustable monitor setups when desks are pushed together back-to-back. In addition, this slat wall system also has options for three VESA-compliant monitor mounts (DMSW1332STAA, DMSW1332MTAA and DMSW1332LTAA), all sold separately. Compliant with the Federal Trade Agreements Act (TAA), which makes it eligible for GSA (General Services Administration) Schedule and other federal procurement contracts.