The Top Mounting Bracket for Heated air curtains is for use with a 5/16" threaded rod. The mounting brackets come in a set of 2. Air curtains that are greater than 72" require 2 sets (4 brackets). These include the LoPro 2 (LPV2) and Phantom (PH10 and PH12) units from 84" - 144" long.
The mounting brackets are available in both Obsidian Black (B0032) to match your air curtain.