Nordic Pure 20x20x4 Pleated MERV 13 Air Filters 6 Pack - Clean Air Fit

In this review the Nordic Pure 20x20x4 Pleated MERV 13 air filters are assessed for households and HVAC systems that need higher-efficiency particulate removal without drastic airflow penalties. The biggest reason to buy is the filter media: electrostatically charged synthetic pleats rated MERV 13 (equivalent to MPR 2200-2400) that capture fine dust and many airborne particles. The pack of six gives a practical supply for routine replacements, and the review focuses on fit, filtration performance, and how to match the listed nominal size to the filter's actual dimensions.

Key Features

• Actual size caution: The filter lists a nominal size of 20 x 20 x 4 but the actual size is 19 1/2 x 19 1/2 x 3 5/8, so measuring your existing filter is essential to ensure a correct fit.
• MERV 13 performance: The pleated electrostatically charged synthetic media captures a wide range of fine particulates and is equivalent to MPR 2200-2400, offering improved indoor air cleanliness over lower MERV ratings.
• Six-pack convenience: Supplying six filters at once reduces shopping frequency and ensures regular replacement for sustained air quality benefits.
• Compatibility note: If your unit uses a 4 3/8 actual depth filter, the store recommends a different 20x20x5 replacement, so check depth before ordering.
• Made in the USA: The filters are manufactured domestically, which may matter to buyers who prefer locally made HVAC supplies.

Who It's For

This product is best for homeowners and renters with furnaces or air handlers that accept a nominal 20 x 20 x 4 filter but whose filter compartment fits the actual dimension of 19 1/2 x 19 1/2 x 3 5/8. It suits people seeking better filtration for dust, pet dander, and other particles without moving to specialized high-thickness cartridges.

It is less suitable for systems that require a true 4 3/8 depth filter or for specialized HVAC equipment that mandates a different media type. Buyers who prioritize an exact match over nominal sizing should measure their old filter before purchase.

Pros & Cons

Pros

• Good filtration performance from the MERV 13 media that reduces household dust and improves perceived air quality.
• Six filters per pack deliver practical value and reduce the hassle of frequent purchases.
• Made with electrostatically charged synthetic pleats that maintain efficiency without heavy airflow restriction.
• Manufactured in the USA, which many buyers view as a quality signal.

Cons

• The actual size differs from the nominal size, and some customers report fit or thickness mismatches if they do not measure first.
• Not the correct choice for units that require a 4 3/8 actual depth filter; an alternate 20x20x5 option is recommended in those cases.

Specifications

Brand	Nordic Pure
Nominal Size	20 x 20 x 4 in
Actual Size	19 1/2 x 19 1/2 x 3 5/8 in
MERV Rating	MERV 13 (equivalent to MPR 2200-2400)
Pack Quantity	6 filters
Made	USA

Our Verdict

The Nordic Pure 20x20x4 MERV 13 six-pack is a sensible value buy for anyone whose filter slot accepts the stated actual dimension of 19 1/2 x 19 1/2 x 3 5/8. It delivers higher-efficiency particulate capture and comes in a convenient multi-pack, but buyers must measure their existing filter to avoid depth or fit issues. For the price and filtration level it offers, it is a practical choice for improving household air quality.

Frequently Asked Questions

Do these filters really perform like MPR 2200-2400?
Yes, the manufacturer rates the media as MERV 13 and equivalent to MPR 2200-2400, indicating stronger capture of fine particles than lower-rated filters.

Will this fit my 20x20x4 slot?
Measure your existing filter because the nominal 20 x 20 x 4 label differs from the actual 19 1/2 x 19 1/2 x 3 5/8 dimensions stated for this pack.

What if my system uses a 4 3/8 depth filter?
If your old filter measures 4 3/8 in depth, the review recommends ordering the 20x20x5 replacement specified for that actual depth instead.