Center Uprights are vertical channels that attach to the frame (top and bottom). They are frequently used in wider frames to facilitate the installation of 19-in. rack accessories. The vertical hole pattern matches the vertical hole pattern in the frame. Sold individually and include mounting hardware. Can be used in 800-, 1000-, 1200- and 1600-mm wide frames to facilitate the installation of accessories for 600-mm wide frames and 19-in. rack accessories. 12-gauge (2.5 mm) mild steel. Polyester powder paint; RAL 7035 textured light gray standard.