Filter King 11x11x1 Air Filter 3-Pack - MERV 8, Made in USA

In this review the Filter King 11x11x1 Air Filter 3-pack is evaluated for homeowners who need a straightforward, replaceable 1 in HVAC filter that balances particle capture and airflow. The bottom line: this three-pack of MERV 8 pleated filters is best for people who want reliable basic filtration, easy installation, and filters fully manufactured in the United States. It stands out for a pleated design that captures more particles than flat fiberglass pads while remaining thin enough for compact return grills.

Key Features

• MERV 8 rating: Provides moderate particle capture for common household dust, pollen and pet dander without noticeably restricting airflow in most residential systems.
• Pleated construction: The pleated media increases surface area so the filters can trap more particles and run longer between changes compared with flat filters.
• Actual size listed: The product specifies an actual filter dimension of 10.5 in x 10.5 in x 0.75 in to help buyers match compact return slots and avoid the common mismatch with nominal sizes.
• Made in USA: Fully manufactured in the United States under EPA establishment number 103501-FL-1, which may appeal to buyers prioritizing domestic production.
• Replacement interval guidance: Designed to last up to 90 days in typical use with the recommendation to change every 30 to 90 days for 1 in filters to support system longevity.
• Easy installation: Simple open, slide and close replacement makes swaps quick and reduces the chance of incorrect installation.

Who It's For

This product is aimed at homeowners and renters with smaller return openings who need an affordable, basic upgrade from fiberglass pads. The pack is useful for people seeking a simple, no-fuss filter that improves indoor air quality for common allergens without requiring a high-MERV specialty filter or frequent maintenance.

Those who should look elsewhere include households with severe allergy or asthma needs that require a higher MERV rating or thicker filters, and users who need exact nominal sizing for atypical custom housings - some customers reported mixed feedback on size fit and robustness, so double-checking physical slot dimensions is advised.

Pros & Cons

Pros

• Good balance of particle capture and airflow thanks to the MERV 8 pleated media.
• Three-pack offers value and convenient spare filters on hand for routine replacement.
• Made in the USA with clear manufacturing identification for buyers who prefer domestic products.
• Fast, straightforward installation reduces fuss and downtime during changes.

Cons

• Actual dimensions (10.5 in x 10.5 in x 0.75 in) differ from the nominal 11 in x 11 in x 1 in and have produced mixed fit reports from some customers.
• Some users described durability concerns with foldability and robustness compared with heavier-duty filters.

Specifications

Brand	Filter King
Pack quantity	3 filters
Nominal size	11 in x 11 in x 1 in
Actual size	10.5 in x 10.5 in x 0.75 in
MERV rating	MERV 8
Made in	United States (EPA Establishment 103501-FL-1)
Suggested life	30 - 90 days

Our Verdict

The Filter King 11x11x1 3-pack is a practical, value-oriented choice for typical homes that need reliable basic filtration and easy swaps. It is particularly appealing for buyers who prefer products made in the USA and want pleated media that improves capture over flat pads. Verify the actual dimensions before buying if your return slot is tight or nonstandard, but for most users this pack delivers solid performance and convenience at a reasonable price.

Frequently Asked Questions

Are these actual dimensions smaller than the nominal size?
Yes. The filters list an actual size of 10.5 in x 10.5 in x 0.75 in while the nominal size is 11 in x 11 in x 1 in, so measure the slot before purchase.

How often should these filters be changed?
Manufacturer guidance suggests changing 1 in filters every 30 to 90 days depending on use; many users find a 60- to 90-day interval acceptable in low-dust settings.

Do these filters restrict airflow?
The MERV 8 pleated design is intended to trap particles without noticeably impacting airflow in most residential A/C and furnace systems.