Filter King 17x38x1 Air Filter 4-Pack - MERV 8 Pleated HVAC

Our review of the Filter King 17x38x1 4-pack looks at who will benefit most and the single biggest reason to buy: reliable, American-made pleated filters that capture more airborne particles without choking airflow. For homeowners and renters who change 1 in filters regularly, these MERV 8 filters offer a good balance of filtration and low resistance, are fully manufactured in the United States, and are straightforward to install. The bottom line: practical, economical replacements that noticeably reduce dust in living spaces within a couple of days.

Key Features

• MERV 8 rating: Provides mid-level filtration that removes common airborne particles while keeping HVAC airflow efficient.
• Pleated construction: The pleats increase surface area so the filter captures more dust and lasts longer than a flat media filter.
• True-to-size dimensions: Labeled 17 in x 38 in x 1 in with an actual thickness of 0.75 in to fit standard 1 in slots when installed correctly.
• Made in USA: Fully manufactured domestically under EPA establishment number 103501-FL-1, offering consistent build quality.
• Recommended lifespan: Rated for up to 90 days of use, giving flexibility to change filters between 30 and 90 days based on home conditions.
• Easy installation: Simple open, slide and close design makes replacing furnace or A/C filters fast and tool-free.

Who It's For

This filter 4-pack is best for homeowners, apartment dwellers and landlords who want an affordable, dependable replacement for standard 1 in filter slots and who change filters seasonally or every few months. It suits homes without severe allergy demands where MERV 8 strikes a good balance between particle capture and maintaining furnace or A/C performance.

People with heavy allergy sufferers, homes with pets that shed continuously, or those needing high-efficiency filtration should look for higher MERV or specialized HEPA-compatible solutions instead, as this MERV 8 is not designed for medical-grade filtration.

Pros & Cons

Pros

• Good filtration efficiency for general household dust and particles without noticeably restricting airflow.
• Pleated design captures more material and extends time between replacements compared to flat-panel filters.
• Made in the USA with consistent manufacturing and clear EPA establishment identification.
• Customers report easy fit and fast, tool-free installation.

Cons

• Actual thickness is 0.75 in, which may feel slightly different in some older or tight-fitting frames where users expect a full 1 in depth.
• Not intended for high-risk environments requiring higher MERV or HEPA-level filtration.

Specifications

Brand	Filter King
Nominal size	17 in x 38 in x 1 in
Actual size	17 in x 38 in x 0.75 in
MERV rating	8
Pack quantity	4 pack
Country of manufacture	Made in USA (EPA 103501-FL-1)
Recommended replacement	30 to 90 days

Our Verdict

The Filter King 17x38x1 4-pack is a sensible, value-oriented pick for most households that need regular 1 in filter replacements; it captures a meaningful amount of dust, is easy to install, and is manufactured in the United States. For people seeking improved indoor air quality without higher airflow penalty, these MERV 8 pleated filters represent good value, though homes needing medical-grade filtration should choose a higher rating.

Frequently Asked Questions

Are these filters truly made in the USA?
Yes, they are fully manufactured in the United States and list an EPA establishment number for traceability.

How often should I change them?
Filter King recommends changing 1 in filters every 30 to 90 days depending on home conditions; many users find a 60 to 90 day interval acceptable for light use.

Will they fit a standard 1 in slot?
The nominal size is 17 in x 38 in x 1 in; actual thickness is 0.75 in, so most standard slots accept them but check tight frames before buying.