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Koch Air Filter 20 x 20 x 4 MERV 13 Pleated Air Filter - 6 Pack

The Koch Multi-Pleat XL13 MERV 13 furnace filter is a high-performance disposable replacement air filter for all gas and oil furnaces, heat pumps, and AC air handlers that use a 20 x 20 x 4 air filter.

Commonly used in Air-Vac Fume Exhaust Systems Furnaces.

This filter should have the same, if not higher, efficiency rating as the original equipment manufacturer's air filter media. 

It is also unaffected by high humidity and is hydrophobic (non-moisture absorbing). Koch Multi-Pleat XL13 air filters can upgrade existing flat panels.

  • Media:100% Non-woven synthetic non-moisture absorbing media manufactured from recycled material with a MERV 13 efficiency rating and a UL 900 Class 2 listing
  • Media Support:Diamond-shaped expanded metal
  • Pleat Design:V Pleat
  • Frame:Moisture-resistant clay-coated frame made with recycled material

The Koch air filter media should be checked every month. Adjust the schedule to your needs, but replace the filter every three months.

This package ships with 6 filters.