Description
Filtrete™ 20x20x4 MERV 13 (MPR 1900) Premium Air Filter
🥇 HealthyHome Gold Standard
The Filtrete™ 20x20x4 MERV 13 (MPR 1900) filter is our premium recommendation for advanced HealthyHome Corsi-Rosenthal Box designs that utilize 4-inch media filters.
Unlike traditional 1-inch filters, the 4-inch deep-pleated construction provides significantly more filter surface area. This allows for excellent airflow while capturing large amounts of airborne particles, extending filter life and reducing airflow resistance.
When paired with a compatible fan and enclosure, these filters create a powerful DIY air cleaner capable of reducing airborne mold spores, fine dust, pollen, smoke particles, pet dander, bacteria, and other microscopic contaminants that affect indoor air quality.
Why We Recommend It
- 🥇 HealthyHome Gold Standard for advanced Corsi-Rosenthal builds
- Deep 4-inch pleated media for increased airflow
- Longer filter life than standard 1-inch filters
- MERV 13 / MPR 1900 high-efficiency filtration
- Captures mold spores, dust, pollen, smoke, and other airborne particles
- Premium performance for high-capacity DIY air cleaners
Best Applications
- Advanced HealthyHome Corsi-Rosenthal Boxes
- Mold recovery
- Large rooms
- High-use living spaces
- Home offices
- Bedrooms
- Supplemental indoor air filtration
HealthyHome Tip
The additional filter depth increases the amount of filtration media available, allowing more air to pass through with less resistance while extending the useful life of the filter. This makes 4-inch filters an excellent choice for high-performance DIY air cleaners.
HealthyHome Rating
🥇 HealthyHome Gold Standard
For members building an advanced HealthyHome Corsi-Rosenthal Box, this is our preferred 4-inch filter. Its combination of excellent airflow, long service life, and high-efficiency filtration makes it one of the best options for improving indoor air quality during mold recovery.
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