Upgrade Kit 401 Filter Media MERV 11

Aprilaire 401 Air Filter Performance upgrade kit

HIGH-PERFORMANCE UPGRADE — Improved performance for cleaner air from your Aprilaire 2140 2400 or Space Gard Model 2400 air cleaner

Fast and Easy Upgrade for Improved Filter Performance. This kit includes (1413): one new, high-performance 413 filter Genuine Aprilaire filter; and the easy-install system frame: two rails, four uprights, and a door seal. It takes just 30 seconds to snap together.
QUICK INSTALL GUIDE:
1)Remove that clunky old filter from your furnace.
2)Slide in the new frame.
3)Slide the new 413 filter onto the rails.