Freedom Air Filters’ pre-filter pair for Mack’s CH and CL models is engineered to prevent larger particles of debris such as grain chaff, rubber, dirt and sand from getting into and clogging the air filter elements. The pre-filters are treated with a hydrophobic water-repellant process that helps keep out rain, ice and snow and are designed to protect a truck’s engine and performance air filter without sacrificing airflow or horsepower. They are configured to fit directly over the factory air intake grilles and to be installed easily by removing and replacing two screws and by using the provided washers.
Freedom Air Filters, www.freedomairfilters.com
