Aprilaire 310 Replacement Filter for Whole-House Air Purifiers – MERV 11, 20x20x4, Pack of 1

Overview

The Aprilaire 310 Healthy Air replacement filter is designed to live in your whole-house air purifier, catching airborne particles as air cycles through. This MERV 11 filter targets pollen, mold spores, bacteria, pet dander, and dust, helping keep surfaces cleaner and reducing the effort of regular cleaning.

With a 4-inch depth, it provides a large filtering area (21.3 square feet of filtering media), delivering more contact with particulates than thinner filters. Self-Seal Technology minimizes air bypass, so more air passes through the media for consistent performance and improved system operation.

Compatibility and installation

• Compatible with Aprilaire air cleaner models 1310, 2310, 3310, and 4300.
• Patented Interlock Rail System makes replacement quick: unpack, slide in, close the door.
• Nominal size 20 x 20 x 4 inches; note that nominal size is an industry standard and not the exact measurement.
• Genuine Aprilaire filter with the Pure Fit Promise for a precise, reliable fit.

Performance and longevity

• Low initial resistance with high dust-holding capacity supports up to 12 months of use in many homes.
• Efficient capture of pollen, dust, mold spores, bacteria, and pet dander as air passes through the media.
• Self-Seal technology minimizes air bypass, helping your purifier maintain peak performance.

Note: MERV is a standard rating; higher numbers indicate more filtration. This filter is rated MERV 11 and performance is tested to ASHRAE 52.2.

Designed and manufactured in the USA, the Aprilaire 310 filter is a genuine part that supports cleaner air and dependable system operation. Its large media area and efficient design can contribute to energy efficiency and reduced dust buildup over time.