The PFA 9145 is part of the modular Connect-it mounting system which enables you to mount displays on columns without drilling. The PFA 9145 Column clamp has been developed to be used in combination with a Connect-it interface bars and strips. (E.g PFB 3405 & PFS 3304 for a screen with VESA 400x400.)Above it can be used in combination with PFW 1000, PFW 2000 and the PFW 3000 series.