• Product label: Special Order

Koch Multi-Pleat Green13 20 x 25 x 1 MERV 13 Pleated Air Filter - 12 Pack

Sale price $332.16 USD Regular price
Regular price $332.16 USD
Unit price $27.68 item
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Koch Multi-Pleat Green13 20 x 25 x 1 MERV 13 Pleated Air Filter - 12 Pack
Sale price $332.16 USD Regular price
Regular price $332.16 USD
Unit price $27.68 item

Product Details

The Koch Multi-Pleat Green13 is a MERV 13 high-efficiency pleated filter for furnaces, heat pumps and air handlers in homes and commercial buildings. It fits any system that takes a 20 x 25 x 1 filter (20x25x1). This case contains 12 filters. At a quarterly change, that is three years of filters for one system, or one year for three systems.

Green13 combines an electrostatically charged polypropylene media layer with a spunbonded backing scrim and a laminated galvanized expanded-metal support grid, inside a double-wall, moisture-resistant beverage-board frame with reinforced corners. Koch specifies it for applications such as hospitals, laboratories, pharmaceutical plants and commercial office buildings, and notes that it can earn points toward LEED certification. It installs the same way as any standard pleated filter of the same size.

Is This the Right Size?

Air filters are sold by nominal size, the rounded size printed on the frame of your current filter. The filter itself is made slightly smaller so it slides into the filter slot; this one measures 19-1/2" x 24-1/2" x 3/4". Match the nominal size printed on your old filter, not a tape measurement of the slot.

Not sure? Send us a photo of the label on your current filter and we will confirm the match before you order.

Specifications

Brand Koch Filter
Series Multi-Pleat Green13
Koch Part Number 102-714-009
Nominal Size 20 x 25 x 1
Actual Size 19-1/2" x 24-1/2" x 3/4"
MERV Rating MERV 13 (ASHRAE 52.2-2007)
Media Electrostatically charged polypropylene with spunbonded scrim
Media Support Galvanized expanded metal, laminated to media
Frame Double-wall moisture-resistant beverage board, reinforced corners
Rated Airflow 1,050 CFM @ 300 FPM | 1,740 CFM @ 500 FPM | not rated @ 625 FPM
Initial Resistance 0.26" w.g. @ 300 FPM | 0.50" w.g. @ 500 FPM
Recommended Final Resistance 1.0" w.g.
Quantity 12 filters

What MERV 13 Captures

MERV 13 captures at least 50% of particles in the 0.3–1 micron range, 85% in the 1–3 micron range and 90% in the 3–10 micron range under ASHRAE 52.2. Higher efficiency can mean more airflow resistance, so if your system is older or already struggles for airflow, compare the resistance figures above with your equipment manual, or consider MERV 11.

Other Koch Options in 20 x 25 x 1

Replacement Schedule

Check the filter monthly and replace it at least every three months — sooner in homes with pets, during renovation work, or whenever it looks loaded with dust. Install it with the airflow arrow on the frame pointing toward the blower.

In commercial systems, change the filter when pressure drop across it reaches 1.0" w.g., Koch's recommended final resistance for this filter.

Shop all Koch Filter air filters.

Genuine Koch Filter Replacement Filters

Koch Multi-Pleat filters sold by the full case, with the Koch part number, actual dimensions and case quantity listed on every product.

  • Koch part number on every listing
  • Case pricing on every filter
  • Common and hard-to-find sizes
Koch Filter FAQs

How do I know my size?
Match the size printed on the frame of your current filter. The actual filter is about 1/2" smaller than the nominal size so it slides into the slot.

Which MERV rating should I choose?
MERV 8 is the everyday standard. MERV 11 captures finer dust and pet dander. MERV 13 is Koch’s highest-efficiency pleated option. If your system struggles for airflow, stay at MERV 8 or 11.

How often should I change it?
Check 1" and 2" filters monthly and replace them at least every three months. Deeper 4" and 5" filters typically last 6–12 months.

Why are some sizes special order?
Less common sizes are made by Koch to order. Each listing shows whether it’s in stock or special order.

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