BNX TruFilter 20x20x5 MERV 11 Air Filter - Low Resistance, Made in USA

In this review the BNX TruFilter 20x20x5 MERV 11 air filter is evaluated for homeowners and renters who need a reliable replacement for their HVAC, furnace, or air conditioner. The bottom line: it is a straightforward, effective filter that captures microscopic particles while keeping airflow resistance low, making it a good choice for people concerned about dust, pollen, pet dander and indoor air quality. The reviewer found installation simple and saw noticeable reduction in visible dust within 48 hours.

Key Features

• MERV 11 filtration: Captures microscopic particles like pet dander, pollen, mold spores and dust mites without degrading performance.
• Actual size accuracy: The filter measures 19.88 x 19.88 x 4.38 in, so it slides into standard 20x20x5 slots with a proper fit and no trimming required.
• Electrostatically charged media: The synthetic electrostatic media improves particle capture while maintaining industry leading low air flow resistance for HVAC efficiency.
• Made in USA: Manufactured by BNX Converting in Houston, TX, in an EPA-registered facility, which supports domestic production and quality control.
• Comparable ratings: Works as a replacement comparable to MPR 1000-1200 and FPR 7, giving buyers confidence in filtration level and compatibility.

Who It's For

The BNX TruFilter suits homeowners and apartment dwellers who want better-than-basic filtration without sacrificing system airflow, particularly those with allergies, pets or seasonal pollen concerns. It is also appropriate for routine replacement in furnaces and central air systems where a MERV 11 level is recommended for improved indoor air quality.

It is less appropriate for users who need medical-grade filtration or HEPA-level particle removal, or for systems that specify a lower MERV rating; in those cases consult manufacturer guidance before upgrading filters.

Pros & Cons

Pros

• Good filter quality that captures pollen, dust and pet dander while maintaining airflow.
• Easy installation and proper fit thanks to precise actual size measurements.
• Made in USA and produced in an EPA-registered facility, supporting consistent quality.

Cons

• Not a substitute for HEPA filtration for users needing the highest level of particle removal.

Specifications

Product type	MERV 11 HVAC air filter
Nominal size	20 x 20 x 5 in
Actual size	19.88 x 19.88 x 4.38 in
Filter media	100% synthetic electrostatically charged media
Comparable ratings	MPR 1000 - 1200, FPR 7
Made in	USA (Houston, TX)

Our Verdict

The BNX TruFilter 20x20x5 MERV 11 is a practical, high-value replacement filter for most residential HVAC systems that balances particle capture and airflow. It is worth buying for allergy reduction and routine maintenance because it fits accurately, installs easily and is produced in a certified facility, offering solid performance without major compromises.

Frequently Asked Questions

Will this filter fit my 20x20x5 slot?
Yes, the actual dimensions are 19.88 x 19.88 x 4.38 in so it is designed to slide into standard 20x20x5 slots.

How soon will I notice cleaner air?
Customers report noticeably cleaner air within about 48 hours as the filter captures dust, pollen and pet dander.

Is this equivalent to MPR 1200 or FPR 7?
The filter is comparable to MPR 1000-1200 and FPR 7, providing a similar level of filtration performance.