by FTG Government Fleets Off-Road Equipment Heavy Duty Trucking Transit & School Buses Construction Companies Military Vehicles Marine Applications Mining Industries Refuse & Waste... Haulers Food & Beverage Fleets Asphalt, Sand & Gravel Utility Companies Transport & Delivery Recreation Industries and many more Light Duty & Heavy Duty applications Our landfills... the equivalent of a convoy of 21,000 18~wheel trucks per year. Help to eliminate the 75,000 tons waste, of air filters alone, that strangles California's waste dumps each and every year...