OTR Cabin Air Filters have Expertise Built In™, being made with the highest quality media and engineered to OEM fit, form and function. This heavy duty cabin air filter replacement is manufactured in an ISO9001-certified facility with over 30 years of experience producing heavy duty filters. The OTR cabin filter is purposed for improving the quality of the cabin’s air by keeping dust, mold spores, pollen and pollution at bay.  FleetPride is your First Click in Heavy Duty®.