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Simply 20x21x1 MERV 8 Air Filter, 6 Pack for HVAC

Name: Simply 20x21x1 MERV 8 Air Filter, 6 Pack for HVAC
Brand: Simply
SKU: B0C37TWNPH
Price: 59.95 USD
Availability: InStock
Rating: 4.7 (53036 reviews)

4.7 (53,036 reviews)

Posted Jul 3, 2026Updated Jul 6, 2026

$59.95$69.03

13% OFFYou save $9.08

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In StockPrice changed 25d ago

Is this a good deal?

Universally Compatible: Measuring 20" x 21" x 1", with an actual size of 19.75"x20.75" x 0.75", Simply Filters works with almost any brand. Comparable to 3M Filtrete MPR 600, Filterbuy AFB Silver, and Honey well FPR 5.
Cleaner Air Everywhere: Our filters capture dust, mold, pet dander, and pollen in homes, offices, schools, hospitals, and commercial spaces, trapping 90% of airborne particles, promoting a healthier living environment with clean and fresh indoor air.
Advanced Pleated Technology: With a higher pleat count than most retail, our meticulously crafted filters offer superior capture coverage, optimizing airflow and efficiency.
Long-lasting Filtration & Easy Installation: Enjoy up to 3 months of resilient filtration. Hassle-free replacement for air conditioning units or HVAC systems. Follow airflow arrows and insert into the filter slot for central units or return grilles.
Made in USA: Our filters are made using 100% American components, including recycled materials, ensuring superior performance and quality. Experience exceptional filtration and support local manufacturing.

Good Deal

Save 14% on this 6-pack of MERV 8 air filters. Captures 90% of airborne particles like dust and pollen. Ideal for homes with pets or allergies.

What we like

Universal fit for 20x21x1 slots
Captures dust, pollen, pet dander
Up to 3 months of filtration
Made in the USA

Watch out for

Actual size slightly smaller than nominal
MERV 8 not as high as MERV 11 or 13

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Our Take

Best for: Homeowners with standard 20x21 HVAC slots needing allergy control.

These Simply Filters MERV 8 20x21x1 air filters offer solid performance for a standard household. They trap 90% of airborne particles, including dust, pet dander, and pollen, making them a reliable choice for allergy sufferers. The pleated design has a higher pleat count than many retail filters, which improves airflow without sacrificing capture efficiency. Each filter lasts up to three months, depending on usage. 75 inches, slightly smaller than the nominal 20x21x1. This is common and still fits standard slots. At MERV 8, these filters are a good middle ground - better than basic fiberglass but not as fine as higher MERV ratings, which may restrict airflow in some systems. 95 for a six-pack, you're paying about $10 per filter. That's a reasonable price compared to big-name brands, especially since these are made in the USA. If you have a standard 20x21 filter slot and want dependable filtration without overspending, this is a smart buy.

Price Analysis

Currently $59.95, which is 14% off the $69.87 original price. Over the last 30 days, it averaged $69.87, and over 90 days $72.62. This discount brings it below recent averages, making it a good time to buy.