Provides components to install a powered, roof mounted HVAC pre-cleaner for an enclosed cab. The high efficiency cyclonic filtration delivers clean air to the cab and extends service interval time between filter cleanings. Kit includes MERV16 filter. A HEPA filter for higher levels of filtration and a Carbon filter for removal of odors (landfill, livestock, and other applications) can be purchased separately if desired. Requires FOPS Level 2 or Roof Mounted Attachments Bracket (sold separately).