Filtrete 20x20x1 Air Filter MPR 300 MERV 5 - Basic Dust 6-Pack

In this review the Filtrete 20x20x1 Air Filter MPR 300 is presented as a practical, budget-minded replacement filter for routine home HVAC maintenance. The bottom line: this pack of six pleated, electrostatically charged filters is best suited for households looking to reduce visible dust and catch larger airborne particles without raising airflow resistance. The reviewer found these filters easy to install, effective at trapping basic dust between monthly checks, and a good value for a three-month replacement cycle when compared with thin flat filters.

Key Features

• Electrostatic pleated media: Attracts and holds more particles than a standard non-electrostatic flat filter, helping reduce dust buildup on furniture and ductwork.
• MPR 300 / MERV 5 performance: Captures larger common particles such as dust, lint, and pollen while maintaining low airflow restriction for typical residential systems.
• 1-in filter thickness: Fits common return grilles and furnace slots designed for 1 in filters, keeping installation simple and straightforward.
• 3-month recommended life: Each filter is intended for roughly a three-month replacement interval under normal household conditions, simplifying maintenance schedules.
• 6 filters per pack: Provides a full year of replacements if you change filters every two months or a planned rotation for seasonal use.

Who It's For

These filters suit homeowners who prioritize basic dust control and low-cost maintenance for forced-air systems. If someone wants a simple, no-frills solution that improves indoor air compared with flat fiberglass filters and does not need high-efficiency particle removal, the Filtrete MPR 300 is a sensible choice.

Those who require removal of fine particles, smoke, mold spores, or have severe allergy or asthma concerns should look for higher MERV-rated or specialized filters. Also, homes with restrictive HVAC systems that need very high airflow should verify compatibility before switching to any pleated media.

Pros & Cons

Pros

• Electrostatic charge helps capture and hold common household dust and pollen better than non-electrostatic flat filters.
• Low airflow resistance maintains system efficiency in most residential furnaces and air handlers.
• Six filters in the pack offer convenient, scheduled replacements for several months.

Cons

• With a MERV 5 rating, it will not capture the smallest particles like smoke or some allergens that higher-rated filters can remove.

Specifications

Brand	Filtrete
Size	20 x 20 x 1 in
Quantity	6 filters per pack
MPR	300
MERV	5
Recommended life	3-month replacement cycle

Our Verdict

The Filtrete 20x20x1 MPR 300 is a practical, cost-effective choice for routine home HVAC maintenance when the goal is to reduce visible dust and maintain airflow. It delivers better dust capture than basic flat filters, comes in a convenient six-pack, and is good value for most households that do not require high-efficiency particulate removal.

Frequently Asked Questions

How often should these filters be changed?
Filtrete recommends a roughly three-month replacement interval under normal household conditions; higher dust loads or pets may require more frequent changes.

Will this filter fit my system?
The filters are 20 x 20 x 1 in and fit return grilles and furnaces designed for 1 in filters; verify your existing filter slot size before buying.

Does MPR 300 mean high filtration?
MPR 300 (MERV 5) captures larger particles like dust and pollen but is not intended for fine particle or smoke removal; choose a higher MERV if you need that level of filtration.