Gibraltar's G-FORCE M30 Post & Beam perimeter fence system is certified and tested in two widths, allowing for minimum/maximum length runs. The unit is certified in a 28'-9" and 140'-9" span end post to end post allowing the system to be installed as a certified unit in 28' segments between those widths. The unit is certified to ASTM F2656-07 M30 P1 and ASTM F2656-18a M30 P1. This is one of the most cost effective systems on the market to install and saves on labor due to the simplicity of the design. Gibraltar offers continuation and corner posts with this system that allow it to tie into other certified Post & Beam systems Gibraltar offers at the M40 and M50 levels.