Clorox 18x20x1 Air Filter MERV 11 Pleated - 4 Pack

In this review of the Clorox 18x20x1 Air Filter pack, the bottom line is simple: this affordable 4-pack suits households and small offices that want improved indoor air without frequent filter changes. The reviewer found the filters easy to install and effective at capturing a wide range of airborne particles thanks to the MERV 11 pleated media, which the manufacturer compares to MPR 1000-1200 and FPR 7. For people with mild allergy concerns or who want better performance than basic fiberglass filters, these strike a practical balance of filtration, build quality, and lifespan.

Key Features

• Designed to fit: The filters are made for nominal 18x20x1 slots with an actual size of 17.75 in x 19.75 in x 0.75 in, so they install without trimming in most standard housings.
• Pleated MERV 11 media: The pleated synthetic media captures a broad range of indoor particles for cleaner air compared with basic fiberglass filters.
• Up to 90 days life: The pleated design is rated to provide up to 90 days of filtration depending on use, reducing the frequency of replacements for many households.
• Synthetic electrostatically charged media: The charged fibers help attract and hold smaller particles while maintaining airflow through heating and cooling systems.
• Sturdy frame and backing: A beverage board frame and wire-backed media give the filter structural integrity for reliable handling and installation.
• Unscented construction: The filters are unscented, making them suitable for fragrance-sensitive rooms like bedrooms or classrooms.

Who It's For

The Clorox 18x20x1 MERV 11 4-pack is well suited to homeowners, renters, or small office managers looking for a step up from basic fiberglass filters who want longer service intervals and better particle capture. It fits common 18x20x1 housings and is appropriate where improved indoor air is desired without moving to high-restriction HEPA-style solutions.

Those who should look elsewhere include households needing medical-grade filtration or people with severe respiratory conditions that require HEPA-level capture, since this product is a MERV 11 pleated filter and not a medical air purifier.

Pros & Cons

Pros

• Effective MERV 11 pleated media captures more particles than standard fiberglass filters.
• Longer-lasting performance with up to 90 days between changes in typical use.
• Solid construction from a beverage board frame and wire-backed media for reliable fit and handling.
• Unscented design suitable for fragrance-sensitive environments.

Cons

• Not intended for environments that require HEPA or medical-grade filtration.
• Actual filter dimensions are slightly under nominal size, so confirm fit in nonstandard housings.

Specifications

Our Verdict

The Clorox 18x20x1 MERV 11 pleated 4-pack is a practical choice for most homes and small offices that want noticeably cleaner air without frequent replacements. It balances effective particle capture, a sturdy frame, and up to 90 days of service to deliver good value for typical household HVAC systems.

Frequently Asked Questions

How often should I change these filters?
Change intervals depend on use and conditions, but the pleated design is rated for up to 90 days under typical household use.

Will this fit my furnace filter slot?
These are nominal 18x20x1 in filters with an actual size of 17.75 in x 19.75 in x 0.75 in, so they fit most standard housings sized for 18x20x1 in; check your slot if it is nonstandard.

Are these suitable for allergy sufferers?
The MERV 11 media captures a broad range of particles and improves indoor air compared with basic fiberglass filters, but it is not a substitute for HEPA filtration for severe allergies.