The first is the length of the fibre used.
Cannabis Inc. is actually Oregon corporation founded in March of 2009 that generates an efficient and secure infrastructure for that Medical Marijuana Industry. You are much better off without them. https://Pr.Newsmax.com/article/Garage-Door-Grunts-Expands-as-Premier-Commercial-Garage-Door-Opener-Installers?storyId=668ea40cf31e8e0008dc8f9c