Filtrete Allergen Reduction Filter for Whole House Air Cleaners - 20x20x4

From the most trusted brand in residential air filtration, the Filtrete 20x20x4 Allergen Reduction Air Filter is designed to fit any brand of Whole House Air Cleaning Sytem that uses a 20x20x4 replacement filter.

This includes the following 20x20 Whole House Media Air Cleaners:

• Honeywell F25
• Honeywell F35
• Honeywell F100
• Honeywell F150
• Honeywell F200

The Filtrete 20x20x4 filter has a Microparticle Performance Rating (MPR) of 1550, and removes the following airborne allergens:

• 97% of Pollen
• 97% of Mold Spores
• 97% of Dust Mite Debris

Actual Filter Dimensions: 19-7/8 inches x 19-7/8 inches x 4-3/8 inches

Other Available Sizes:

Filtrete 16x25x4 Filtrete 20x25x4

The Filtrete 4-inch Allergen Filter should be replaced at least every 12 months.

In a typical home, a 4-inch thick air filter will become completely clogged with tiny particles of dust, pollen, mold, etc. after around 12 months of use. Certain conditions can add more particles to the air, and reduce the life of the filter to less than 12 months.

Change your filter more often if you have:

• Pets
• Dirty ductwork
• Recent construction work or a sanding project
• Smoke from cigarettes, a fireplace, a wood-burning stove, or candles

Why should you change your filter on time?

As the filter reaches the end of its life, the clogging makes the fan work harder and harder to push the air through the filter. This restriction can reduce the airflow through the house, and may affect the performance of the heating & cooling system.