11.5x21x4 MERV 13 Pleated Air Filter

Actual Size: 11.5x21x4"

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New look, same great filter

We’re updating the “look” of our filters.
While we do, your air filter will be the correct size & performance, but may look different than the image above. Learn more

Merv 8

Standard

Merv 11

Superior

Merv 13

Optimal

$138.48

$264.06

in stock

Ships in 24 hours

Quantity Discount

1 for$44.01 ea2 for$27.50 eaSave 38%3 for$26.05 eaSave 41%4 for$25.33 eaSave 42%5 for$24.37 eaSave 45%6-11 for$23.08 eaSave 48%12+ for$21.85 eaSave 50%

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OPTIMAL AIR FILTRATIONRESIDENTIAL AND/OR COMMERCIAL USEChange Every 3 Months

ABOUT

This is a list 11.5x21x4 MERV 13 air filter replacement for your furnace, air conditioner, heat pump, or HVAC system
Actual air filter size: 11.5x21x4"
MERV 13 synthetic media (comparable with MPR 1500/1900 and FPR 10) offers the best protection from dust, pollen, pet dander, mold, smog, bacteria, and virus carrying particles by trapping 98% of airborne particles without impacting air flow.
High-quality construction means electrostatically charged pleated filter media, reinforced wire backing for structural integrity, and a durable frame to resist heat and humidity
Built to last 3 months. 300% longer than fiberglass models
100% manufactured in the United States and designed with recyclable materials
Learn more about 11.5x21x4 Air Filters