Filter King 24.5x11.5x1 Air Filter 4-Pack - MERV 8 Pleated

Our review of the Filter King 24.5x11.5x1 Air Filter 4-pack finds it is a practical choice for homeowners who want a no-frills, effective replacement for common A/C and furnace systems. The single biggest reason to consider these filters is reliable particle capture from a pleated design rated at MERV 8, which reduces dust and improves indoor air quality without noticeably restricting airflow. For someone seeking a budget-friendly, American-made option that fits standard 1 in filter slots and is simple to install, this pack is worth a close look.

Key Features

• MERV 8 rating: Provides consistent capture of household dust, pollen, and pet dander while maintaining good airflow for HVAC efficiency.
• Pleated construction: The pleats increase surface area so the filter traps more particles and lasts longer between changes.
• Actual dimensions: Labeled 24.5 in x 11.5 in x 1 in with an actual depth of 0.75 in, which helps ensure a snug fit in many furnace and A/C slots.
• Made in USA: Fully manufactured domestically with EPA establishment details provided, giving reassurance about manufacturing origin and material standards.
• Long run time: Rated to last up to 90 days depending on conditions, letting users replace less frequently under normal household use.
• Simple installation: Open, slide, and close design makes swaps quick and easy for homeowners or maintenance staff.

Who It's For

This filter pack works well for homeowners, renters, and small-business operators with standard 1 in filter slots who want improved indoor air quality without sacrificing system airflow. It is particularly suited to those who value a MERV 8 balance of particle capture and energy-friendly performance, plus shoppers who prefer products manufactured in the United States.

Those who need higher allergen or pathogen control should look for a higher MERV rating or specialty filters, and users with nonstandard or very exacting depth requirements should measure the slot carefully since the actual depth is 0.75 in rather than a full 1 in.

Pros & Cons

Pros

• Solid filter quality with pleated media that traps common household particles effectively.
• Good value for money as a 4-pack that can last up to 90 days in typical use.
• Easy installation - a simple open, slide, and close replacement process.
• Made in the USA, which provides confidence in manufacturing standards.

Cons

• Actual depth is 0.75 in so some users report fit variations if their slot expects a full 1 in depth.
• Not intended for highly sensitive allergy control where a higher MERV or HEPA solution is required.

Specifications

Filter type	Pleated air filter
Size (labeled)	24.5 in x 11.5 in x 1 in
Actual size	24.5 in x 11.5 in x 0.75 in
MERV rating	MERV 8
Pack quantity	4 pack
Country of manufacture	Made in USA (EPA Establishment 103501-FL-1)
Recommended replacement	Every 30-90 days depending on use

Our Verdict

The Filter King 24.5x11.5x1 4-pack is a practical, cost-effective choice for typical homes and light-commercial settings that need reliable MERV 8 filtration without complex installation. It is good value for anyone who wants improved dust control, domestic manufacture, and easy replacement cycles; those needing deeper filter depth or higher allergen removal should evaluate alternative filters.

Frequently Asked Questions

Are these filters true to size?
They are labeled 24.5 in x 11.5 in x 1 in but the actual depth is 0.75 in, so measure the slot to confirm a proper fit.

How often should they be changed?
Filter King recommends changing 1 in filters every 30 to 90 days depending on household conditions and system use.

Will these restrict airflow?
With a MERV 8 rating the filters are designed to trap particles without significantly impacting normal HVAC airflow in compatible systems.