20x20x4 Pleated Air Filter MERV 13 Plus Carbon - 6 Pack

Our review of the Nordic Pure 20x20x4 Pleated Air Filters MERV 13 Plus Carbon finds them best for homeowners who want stronger particle capture and basic odor reduction without frequent replacement costs. The biggest reason to buy is the combination of a high filtration rating and an activated carbon panel in a 6 pack, which delivers consistent dust reduction and improved indoor air quality for a full-season run in many systems. Measure your existing filter and compare to the listed actual size before ordering to ensure a proper fit.

Key Features

• Nominal and actual size: The nominal size is 20 x 20 x 4 while the actual filter measures 19 1/2 x 19 1/2 x 3 5/8, so buyers should measure their slot for an accurate fit.
• MERV 13 performance: The MERV 13 rating is equivalent to MPR 2200-2400 and captures a wide range of airborne particulates, which helps reduce dust and allergens around the home.
• Plus carbon panel: A flat panel infused with activated charcoal helps attract and reduce common household odors and volatile compounds alongside particle filtration.
• Synthetic pleated media: Electrostatic synthetic materials deliver consistent airflow control while improving particulate capture compared with inexpensive fiberglass options.
• Made in the USA: Domestic manufacture provides predictable build quality and consistent sizing compared with some imported alternatives.

Who It's For

These filters suit homeowners and renters who want higher-efficiency filtration for airborne particles and modest odor control without purchasing specialty cartridges. The 6 pack is practical for people who change filters seasonally or keep spares on hand to maintain air quality over several months.

People who need an exact depth match to units that use a 4 3/8 actual depth should look at the manufacturers alternate 20x20x5 option instead, and anyone unsure about fit should measure the current filter since some customers report size variance between nominal and actual dimensions.

Pros & Cons

Pros

• High filtration efficiency with MERV 13 equivalence helps reduce dust and allergens effectively.
• Added activated carbon panel provides basic odor reduction for living spaces.
• Good build quality and consistent materials from a Made in the USA product.
• Six-pack offers value and convenient rotation for seasonal maintenance.

Cons

• Actual dimensions differ from nominal dimensions, so fit issues can occur if the existing filter is a nonstandard depth.
• Carbon panel reduces some odors but is not a replacement for specialized odor-control systems.

Specifications

Our Verdict

The Nordic Pure 20x20x4 MERV 13 Plus Carbon 6 pack is a solid value for most households seeking improved particulate filtration with modest odor reduction. It is a practical choice when the actual size matches the system slot and offers good build quality and a useful supply of replacement filters at a reasonable cost.

Frequently Asked Questions

Will this filter fit my 20x20x4 slot?
Measure your existing filter and compare to the actual size 19 1/2 x 19 1/2 x 3 5/8 to confirm fit before ordering.

How much odor control does the carbon provide?
The flat activated charcoal panel helps reduce common household odors but is not a substitute for specialized odor filtration systems.

Is MERV 13 equivalent to MPR 2200?
Yes, Nordic Pure lists MERV 13 as equivalent to MPR 2200-2400 for high particle capture performance.