I am working on a warehouse project that has supply fans (wall mounted) to ventilate the space, we are pursuing the Enhanced IAQ credit <<Interior Cross Contamination Prevention>>, this supply fans does not allow the installation of a filtration system. The warehouse will only be occupied during short periods of time by the people that receives the product. Is it mandatory to have the MERV 13 filters in these fans?

We are complying with the filtration media in the office design that is also part of the project. 

Thanks in advance