Filter King 17.25x35.25x1 Air Filter 6-Pack - MERV 11 Performance

In this review the Filter King 17.25x35.25x1 6-pack is evaluated for homeowners and renters who need a reliable, higher-efficiency one-inch replacement filter. The bottom line: this set is best for those who want improved particle capture without sacrificing airflow, thanks to its MERV 11 rating and pleated design. It is especially useful for households concerned about allergens and indoor air quality and for anyone who prefers a product fully manufactured in the United States.

Key Features

• MERV 11 rating: Captures finer airborne particles than basic filters, which can reduce dust and some allergens in living spaces.
• Pleated design: Increases surface area so the filter traps more particles and extends the usable life between changes.
• Six-pack supply: Provides several months of replacements so routine maintenance is simple and infrequent for typical households.
• Made in USA: Fully manufactured domestically, indicating consistent construction and materials sourced under EPA establishment oversight.
• Up to 90 day life: Can last as long as 90 days depending on conditions, offering flexible replacement intervals between 30 and 90 days.
• Easy installation: The simple open, slide and close fit makes swapping the filter straightforward for most HVAC systems that accept a 1 in filter.

Who It's For

This pack is aimed at homeowners, renters and light-commercial spaces that use standard 1 in HVAC filter slots and want better particle capture than a basic fiberglass filter. It is a practical choice for people with seasonal allergies, pet dander concerns, or anyone looking to reduce dust buildup and protect HVAC components.

Those who should look elsewhere include households that require HEPA-level filtration or hospital-grade air cleaning, and systems that mandate a different thickness or custom size. Also check your equipment if it strictly requires a full 1.0 in nominal depth rather than the actual 0.75 in thickness listed.

Pros & Cons

Pros

• Higher-efficiency MERV 11 capture offers better removal of fine particles compared with basic filters.
• Pleated construction extends filter life and helps maintain airflow while trapping more contaminants.
• Six filters in the pack reduce the frequency of reordering and make scheduled changes convenient.

Cons

• Actual thickness is 0.75 in, which caused some customers to question size fit; confirm your slot accepts this actual measurement.
• Build quality impressions vary among users, with some calling it less sturdy than expected.

Specifications

Brand	Filter King
Rated Size	17.25 in x 35.25 in x 1 in
Actual Size	17.25 in x 35.25 in x 0.75 in
Quantity	6 pack
MERV Rating	MERV 11
Made	Made in USA (EPA Establishment 103501-FL-1)
Recommended Change Interval	30 - 90 days

Our Verdict

The Filter King 17.25x35.25x1 6-pack is a solid value for most homes that need better filtration than standard fiberglass filters, combining a MERV 11 rating, pleated construction and domestic manufacturing. Buyers should confirm the actual 0.75 in thickness fits their slot, but for compatible systems this pack offers convenience and noticeable air quality improvement at a reasonable cost.

Frequently Asked Questions

Will this filter fit my system?
It fits systems that accept a nominal 17.25 in x 35.25 in x 1 in filter, but note the actual thickness is 0.75 in so verify your slot can accommodate that measurement.

How often should I change these filters?
Change interval depends on use and environment, but the recommendation is every 30 to 90 days for 1 in filters; many users replace on a seasonal schedule.

Does MERV 11 reduce airflow?
MERV 11 is designed to trap finer particles without significantly impacting airflow in properly sized residential HVAC systems, though systems with weak blowers should be checked for compatibility.