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    Home / Koch High Efficiency Air Filters / Koch Air Filter 20 x 20 x 4 MERV 13 Pleated Air Filter - 6 Pack
    Koch Multi-Pleat Replacement Filter - Six Pack
    Koch Multi-Pleat Replacement Filter - Single
    Koch Multi-Pleat Replacement Filter - Six Pack
    Koch Multi-Pleat Replacement Filter - Single

    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.

    Koch Filter

    $392.21$490.27
    Purchase options
    $392.21 USD
    $352.99 USD

    Auto-renews, skip or cancel anytime.

    To add to cart, go to the product page and select a purchase option

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    You have the best prices and you are local so I can pick up my order to save on shipping costs. Your staff are always very helpful and nice when I pick up my order.

    Pat - Carlisle, PA

    Customer Testimonials

    We love your company! We have been dealing with your company for several years for replacement part for our UV system. However we still compare prices with other online companies for the best deal and consistently you all win out.

    Bennie W. - Saint Petersburg, FL

    Customer Testimonials

    This is the second time I have ordered my filters through this website. Very easy to do, brought my account right up. Excellent service, very realistic prices. That hasn't changed since last time I purchased. That is a great big Plus! Thank you so much, will be back!

    Sherry M. - Longview, TX

    Auto-renews, skip or cancel anytime.