Industry’s fastest install system due to minimal parts. Lowest A frame part count of any system, just 3 parts (post, beam and brace) and 6 bolts for 2 up. Three axes of adjustability demanded by installers for navigating real world site conditions where significant adjustability in the field is required. Standard system has 3.5"[8.89cm] vertical adjustability. Optional post extenders allow 10" [25.4cm] vertical adjustability.