1413 APRILAIRE INTERNAL UPGRADE KIT

High-Performance Upgrade - Improved Performance for Cleaner Air from Your Aprilaire or Space Gard Model 2400 Air Cleaner

Eliminates 40 Percent More Dust - the New 413 Filter Removes 40 Percent More Dust-Size Particles of 1 Micron Compared to the Older Model 401 Air Filter

Removes up to 75 Percent More Viruses - the New 413 Filter Removes up to 75 Percent More Virus-Size Particles of 0.3 to 1 Micron Compared to the Older Model 401 Air Filter

Patented Self-Seal Technology - Ensures a Perfect Fit for Peak Performance and Efficiency

Easy to Assemble and Install - Slides Directly in to Your Purifier - No More Pleat Spacers

Fast and Easy Upgrade for Improved Filter Performance

It Takes Just 30 Seconds to Snap Together

Quick Install Guide - Remove that Clunky Old Filter from Furnace

Slide in the New Frame

Slide the New 413 Filter on to the Rails