Filter King 6x35.5x1 Air Filter 4-Pack - MERV 8 Pleated Home Filters

In this review the Filter King 6x35.5x1 Air Filter 4-Pack is evaluated for homeowners and renters who need an affordable, reliable replacement for A/C and furnace systems. The single biggest reason to buy is the combination of a true MERV 8 pleated design and US manufacturing, which delivers noticeably cleaner air within days while fitting common 1 in filter slots. The pack's lifespan guidance and pleated construction make it a practical upgrade for routine home maintenance.

Key Features

• MERV 8 rating: Captures a wide range of airborne particles to improve indoor air quality without significantly restricting airflow.
• Pleated design: The pleats increase surface area so the filter traps more dust and particulates and lasts longer between changes.
• Actual size accuracy: The nominal 6 in x 35.5 in x 1 in is manufactured to an actual size of 6 in x 35.5 in x.75 in to ensure a proper fit in standard slots.
• Made in USA: Fully manufactured in the United States with EPA establishment details provided, which can reassure buyers about origin and quality control.
• Long service window: Rated for up to 90 days of use for typical 1 in applications, offering a balance of value and maintenance interval.
• Easy installation: A simple open, slide and close process that most users can complete quickly without tools.

Who It's For

This kit is best for homeowners, renters, and maintenance-minded users with standard 1 in furnace or A/C filter slots who want a cost-effective way to reduce dust and improve indoor air quality. Anyone seeking a filter that is US-made and balances particle capture with airflow will find this 4-pack useful.

Those with severe allergy sufferers, ultra-sensitive environments, or equipment requiring higher-efficiency filtration should look at higher MERV ratings or specialized HEPA solutions, since MERV 8 is midrange and designed for typical residential needs rather than medical or clean-room use.

Pros & Cons

Pros

• Good particle capture for everyday home dust control and improved air quality.
• Consistent fit and size accuracy that customers report as matching their filter slots.
• Made in the USA construction and clear EPA establishment information for quality assurance.
• Value-packed 4-pack that can stretch replacement intervals up to 90 days in suitable conditions.

Cons

• Actual thickness is.75 in vs the nominal 1 in, which may cause slight fit or sealing issues in some tight housings.
• Some users report occasional difficulty installing depending on their filter frame or slot design.

Specifications

Brand	Filter King
Pack size	4-pack
Nominal size	6 in x 35.5 in x 1 in
Actual size	6 in x 35.5 in x.75 in
MERV rating	MERV 8
Made in	United States (EPA Establishment No. 103501-FL-1)
Recommended change interval	30 - 90 days for 1 in filters

Our Verdict

For typical residential HVAC systems the Filter King 6x35.5x1 4-Pack offers a practical, well-made MERV 8 option that balances particle capture and airflow. It is particularly good value for routine maintenance and households wanting a US-made filter, though those needing thicker or higher-efficiency filters should consider alternatives.

Frequently Asked Questions

How often should these filters be changed?
Manufacturer guidance is every 30 to 90 days for 1 in filters; typical household use often lands in the 60-90 day range depending on dust and pet levels.

Will a MERV 8 filter impact airflow?
MERV 8 is designed to trap more particles without a significant impact on airflow in standard residential systems, maintaining system performance in most homes.

Do these filters really come from the USA?
Yes, these are fully manufactured in the United States and include an EPA establishment number for traceability.