20x24x4 Pleated Air Filter MERV 12 Plus Carbon 6 Pack - Odor Control

In this review the reviewer found the Nordic Pure 20x24x4 Pleated Air Filter MERV 12 Plus Carbon 6 Pack to be a practical choice for homeowners who want stronger particle capture and odor reduction without a dramatic drop in airflow. The bottom line: this pack is best for families or occupants who need reliable filtration for pollen, dust and VOCs while preserving HVAC performance. The review highlights fit considerations and the dual material construction as the single biggest reason to buy: activated carbon fused to a MERV 12 media for odor control plus high particulate removal.

Key Features

• Dual material construction: Carbon is fused to the MERV 12 media to trap odorous gases and keep conditioned air smelling cleaner.
• High filtration efficiency: Rated MERV 12 and comparable to MPR 1500-1900, it captures a broad range of airborne particles for healthier indoor air.
• Reduced flow restriction: The fusion design increases surface area by about 33 percent, which helps maintain good airflow through the system.
• Durable frame: Heavy duty, moisture resistant beverage board frame adds rigidity and longevity in a typical HVAC environment.
• Reinforced pleats: A metal mesh support grid bonds to the pleats for extra support and to prevent collapse under flow.
• Made in the USA: Domestic manufacturing can be important to buyers focused on origin and consistent quality.

Who It's For

The 6 pack is a sensible buy for homeowners, renters or small offices that change filters seasonally and need both particle filtration and odor control; it is especially useful in homes with pets, cooking odors or mild VOC exposure. It also suits people who want a filter rated around MERV 12 (MPR 1500-1900 equivalent) without a heavy hit to HVAC airflow.

It is not the best choice for systems that require an exact nominal fit without checking actual dimensions first; some buyers noted the actual size is slightly different from the stated nominal size, so measure the slot and compare to the actual dimensions before purchase. Those needing hospital grade filtration or very high VOC adsorption should consider higher MERV or dedicated air cleaners instead.

Pros & Cons

Pros

• Effective particle and odor reduction thanks to the activated carbon layer fused to MERV 12 media.
• Good balance of filtration and airflow because of increased surface area and lower flow restriction.
• Sturdy construction with a moisture resistant frame and metal mesh support for durability.
• Six filters in a pack provide convenient multi-month replacement without frequent ordering.

Cons

• Actual filter dimensions are slightly smaller than the nominal 20 x 24 x 4 label, so users must measure to ensure fit.
• Carbon layer provides odor control but is not a substitute for specialized VOC filtration in heavy contamination scenarios.

Specifications

Nominal size	20 x 24 x 4 in
Actual size	19 3/8 x 23 3/8 x 3 5/8 in (19.38 x 23.38 x 3.63)
MERV rating	MERV 12 (comparable to MPR 1500-1900)
Pack count	6 filters
Materials	MERV media fused with activated carbon and metal mesh support
Frame	Heavy duty, moisture resistant beverage board
Origin	Made in the USA

Our Verdict

This 6 pack of pleated MERV 12 plus carbon filters is a practical, cost-effective option for most homes seeking better particle removal and odor control without sacrificing airflow. It offers sturdy construction and consistent performance, but buyers should measure their filter slot against the listed actual dimensions to avoid fit issues. Overall it represents good value for regular residential HVAC maintenance.

Frequently Asked Questions

Are these filters truly odor reducing?
Yes, the activated carbon layer attracts and retains odorous gases and VOCs, so users will usually notice improved smell compared with standard pleated filters.

Will these filters fit a 20 x 24 x 4 slot?
Measure the slot and compare to the stated actual size of 19 3/8 x 23 3/8 x 3 5/8 in to ensure a proper fit, since nominal and actual sizes differ.

Do they restrict airflow more than standard filters?
No, the fused design increases surface area by about 33 percent which reduces flow restriction relative to some thicker carbon filters while maintaining high filtration.