Filter King 17.5x8x1 Air Filter 4-Pack - MERV 8 Pleated

In this review the Filter King 17.5x8x1 Air Filter 4-pack is evaluated for homeowners and renters who need a reliable, easy-to-install 1 in furnace or A/C filter. The bottom line: it is a practical, made-in-USA MERV 8 option that captures more airborne particles than flat filters while preserving airflow, making it a solid choice for routine maintenance and allergy-conscious households. The biggest reason to buy is the combination of pleated construction and a MERV 8 rating that balances particle capture and system performance.

Key Features

• MERV 8 rating: Provides effective filtration of common airborne particles while avoiding excessive restriction to HVAC airflow.
• Pleated design: Increases surface area so the filter captures more dust and extends the time between replacements.
• Actual size accuracy: Labeled 17.5 in x 8 in x 1 in with an actual thickness of 0.75 in, helping ensure a proper fit in compatible housings.
• Made in USA: Fully manufactured in the United States under EPA establishment number 103501-FL-1, assuring consistent materials and construction.
• Long service interval: Rated to last up to 90 days in typical use, with a recommended 30 to 90 day replacement window for 1 in filters to maintain HVAC longevity.
• Fast installation: Simple open, slide and close design makes each replacement quick and easy without tools.

Who It's For

The Filter King 17.5x8x1 4-pack is best for homeowners, renters, and maintenance-minded households using 1 in filter slots who want an affordable, MERV 8 pleated solution that reduces dust and improves indoor air quality without adding strain to their A/C or furnace. It is particularly useful for people who prefer made-in-USA products and those who appreciate a filter that can be changed quickly.

Those who should look elsewhere include households that need higher particle removal (for example very severe allergy or immunocompromised situations), which may require a higher MERV rating or specialized filtration, and systems that require an exact 1.0 in thickness rather than the slightly under 1.0 in actual thickness of 0.75 in.

Pros & Cons

Pros

• Good balance of filtration and airflow due to the MERV 8 rating.
• Made in the USA with consistent construction and clear EPA establishment identification.
• Pleated media captures more dust and particulates and helps extend time between changes.
• Easy, tool-free installation for quick filter swaps.

Cons

• Actual thickness is 0.75 in, which may be slightly snug or feel different in housings expecting a full 1 in depth.
• Not intended for specialty medical or extremely high-filtration needs where a higher MERV is required.

Specifications

Brand	Filter King
Model pack	4-pack
Rated size	17.5 in x 8 in x 1 in
Actual size	17.5 in x 8 in x 0.75 in
MERV rating	MERV 8
Made in	United States (EPA 103501-FL-1)
Recommended change interval	30 to 90 days

Our Verdict

The Filter King 17.5x8x1 4-pack is a practical, value-oriented choice for most homes that need improved dust capture without sacrificing airflow. With pleated media, a MERV 8 rating, and straightforward installation, it delivers dependable performance and good value for routine HVAC maintenance, especially for those who prefer a made-in-USA filter.

Frequently Asked Questions

How often should I change these filters?
Change every 30 to 90 days depending on household dust, pets, and system usage; filters can last up to 90 days in low-demand situations.

Will a MERV 8 filter reduce airflow?
MERV 8 balances particle capture and airflow so it should not noticeably restrict most residential A/C or furnace systems when installed correctly.

Is the actual size different from the labeled size?
The labeled size is 17.5 in x 8 in x 1 in while the actual thickness measures about 0.75 in, which still fits most compatible housings.