Filter King 20x36x1 Air Filter 6-Pack - MERV 13 Home Protection

In this review of the Filter King 20x36x1 Air Filter 6-pack, the bottom line is straightforward: this pack is aimed at homeowners and renters who want a higher-efficiency replacement filter that balances particle capture with reasonable airflow and value. The reviewer found the MERV 13 rating meaningful for capturing finer airborne particles, and appreciated that the filters are fully manufactured in the United States. If you need a straightforward, pleated 1 in filter that can last up to 90 days and installs quickly, this is worth considering.

Key Features

• MERV 13 rating: Provides improved capture of smaller airborne particles compared with lower-rated filters, helping reduce dust and allergens in living spaces.
• 6-pack convenience: Six filters in one purchase give several months of replacements so homeowners can maintain a regular change schedule without repeated shopping trips.
• Actual size accuracy: Labeled 20 in x 36 in x 1 in with an actual size of 19.5 in x 35.5 in x 0.75 in, which helps when measuring tight filter slots and confirming fit before installation.
• Made in USA: Fully manufactured in the United States under EPA establishment number 103501-FL-1, which may matter to buyers seeking domestic production.
• Pleated design: The pleats increase surface area to capture more particles and extend the effective lifetime between changes compared with flat fiberglass filters.
• Fast installation: Simple open, slide and close installation makes swapping filters quick and reduces the chance of incorrect installation.

Who It's For

The Filter King 6-pack is best for homeowners, renters, and small businesses using standard 20 in x 36 in x 1 in filter slots who want a higher filtration level without compromising airflow. It suits people concerned about indoor air quality, allergies, or particulate reduction who prefer a domestic-made option.

This product is less suitable for systems that require exact factory nominal sizes or for users who need ultra-thin or specialty disposable filters; double-check the actual size of 19.5 in x 35.5 in x 0.75 in before purchase. If you need extremely long-life filters beyond 90 days or a thicker profile, consider alternative sizes or designs.

Pros & Cons

Pros

• High filtration efficiency from the MERV 13 media captures finer particles than common 8 or 11 rated filters.
• Six filters per pack deliver simple, predictable replacement cadence and solid value for the price.
• Pleated construction increases capture area while maintaining airflow for common A/C and furnace systems.
• Domestic manufacture reassures buyers looking for US-made products and known production oversight.

Cons

• Some customers report mixed impressions about size and fit, so the actual dimensions should be checked against your filter slot before ordering.
• As a 1 in filter it may need more frequent changes than thicker filters in dusty environments, with recommended replacement between 30 and 90 days.

Specifications

Brand	Filter King
Pack quantity	6 filters
Rated size	20 in x 36 in x 1 in
Actual size	19.5 in x 35.5 in x 0.75 in
MERV rating	MERV 13
Made in	United States (EPA Establishment 103501-FL-1)
Recommended change interval	30 to 90 days

Our Verdict

The Filter King 20x36x1 6-pack is a practical choice for most homeowners seeking improved indoor air quality at a reasonable cost. Its MERV 13 pleated media and domestic manufacture make it a reliable, value-oriented option, provided you confirm the actual dimensions fit your filter slot and accept the typical 1 in filter replacement cadence.

Frequently Asked Questions

How often should these be replaced?
Filter King recommends changing 1 in filters every 30 to 90 days depending on use and indoor conditions.

Will a MERV 13 filter impact airflow?
The pleated design is intended to trap more particles while maintaining airflow for typical residential A/C and furnace systems, but always confirm compatibility with your HVAC manufacturer guidelines.

Are these filters made in the United States?
Yes, these filters are fully manufactured in the United States under EPA establishment number 103501-FL-1.