Filter King 20x35x2 Air Filter 4-Pack - MERV 13 Performance

In this review the Filter King 20x35x2 Air Filter 4-pack is evaluated for homeowners and renters who need a higher-efficiency pleated HVAC filter at a reasonable price. The single biggest reason to consider these filters is the combination of a true MERV 13 rating and a pleated design that captures more airborne particles without noticeably reducing airflow, making them suited to allergy-prone homes and anyone wanting better indoor air quality. The set of four and the claim of being MADE IN USA also appeal to those who prefer domestic manufacturing.

Key Features

• MERV 13 rating: Traps a wide range of airborne particles, helping reduce dust, pollen, and other contaminants in living spaces.
• Pleated construction: Increases filter surface area to capture more particles and extend service life between replacements.
• 4-pack convenience: Supplies multiple replacement filters so users can change filters regularly without frequent reordering.
• Made in USA: Fully manufactured in the United States under EPA establishment number 103501-FL-1, indicating domestic production controls.
• Simple installation: The open, slide and close design makes swapping filters quick and suitable for most residential HVAC housings.

Who It's For

This product is best for homeowners and renters with central air or furnace systems who want a higher-efficiency filter to help with allergies, pet dander, or improved general indoor air quality. The four-pack format is practical for families who prefer to change filters on schedule and keep spares on hand.

Those who need exact, full nominal dimensions or a very rigid heavy-duty frame should check measurements carefully; some customers report size variations versus nominal dimensions and mixed impressions of build strength. If an exact factory-fit is critical, measure your filter slot and compare to the actual size before purchase.

Pros & Cons

Pros

• High-efficiency MERV 13 filtration captures a broad range of particles while maintaining airflow.
• Pleated design increases dust-holding capacity for longer intervals between changes.
• Made in the United States and sold as a practical 4-pack for ongoing maintenance.
• Quick, tool-free installation that most homeowners can complete in minutes.

Cons

• Actual size is 19.5 in x 34.5 in x 1.75 in, which is smaller than the nominal 20x35x2 in size and may cause fit concerns for some installations.
• Customer feedback on build quality is mixed, with some users reporting a less robust frame than expected.

Specifications

Our Verdict

The Filter King 20x35x2 4-pack is a practical choice for households seeking stronger particle capture and the convenience of multiple replacements, offering good value given the MERV 13 performance and pleated design. Buyers should verify the actual size in their filter slot and accept that frame rigidity reports vary, but for most allergy-conscious homeowners this pack delivers meaningful air-quality improvement for the price.

Frequently Asked Questions

Are these filters truly MERV 13?
Yes, the filters are specified as MERV 13 rated, designed to trap a wide range of airborne particles while maintaining airflow.

What is the actual size of each filter?
The actual measured size is 19.5 in x 34.5 in x 1.75 in rather than the nominal 20 x 35 x 2 in, so measure your slot before buying.

How often should these be replaced?
Filter King recommends changing filters every 30 to 90 days; many users find up to 90 days acceptable depending on usage and indoor air conditions.