• Removes nearly 2 times more contaminants.
  • One time upgrade for a lifetime of improvement.
  • Aprilaire Upgrade Kit 1413 installs in minutes with no tools required.
  • Easy-to-change filter system.
  • Aprilaire Upgrade Kit 1413 includes replacement filter #413.
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  • Imported from USA.
Aprilaire 1413 Upgrade Kit For Aprilaire Models 2400 And 2140Features: Upgrade your Aprilaire Model 2400 or 2140 so that it can remove nearly 2 times more contaminants.One time upgrade - lifetime improvementInstalls in minutesNo tools requiredEasier filter changeIncludes Aprilaire Model 413 (replacement filter) and fits in units produced after 1985.