Aprilaire AA 401 - 16x25x6 MERV 10

This AprilAire 401 replacement filter is compatible with the following models:

Aprilaire

2400

Space-Gard

2400

Please verify your unit's measurements before ordering.

Designed with MERV 10 bonded glass fiber media — a surface-loading filter whose efficiency increases with usage, helping reduce airborne particles circulating through your home.

• Helps capture dust, pollen, mold spores, bacteria, and pet dander
• Patented Self-Seal Technology minimizes air bypassing the filter
• Filter efficiency increases with use over time
• Replace every 12–24 months depending on usage

Designed for the AprilAire Interlock Rail System — installation takes seconds with no tools, no assembly, and no cardboard or metal reinforcements needed.

• Simple 3-step process — unpack, slide in, close the door
• Engineered for a precise, secure fit every time

This AprilAire 401 replacement filter is designed and manufactured to optimize the performance of your AprilAire or Space-Gard Air Purifier.

• Designed and manufactured in the USA by AprilAire
• Annual replacement recommended for optimal HVAC protection
• Engineered to optimize performance for the AprilAire 2400 and Space-Gard 2400