Aprilaire Filter 401 for Aprilaire Model 2400; Case of 10
Genuine Aprilaire 401 Media Air Filter (2 Pack) - Walmart.com
Filterbuy 16x28x6 Air Filter MERV 8 Dust Defense (2-Pack), Pleated HVAC AC Furnace Air Filters Replacement for Aprilaire Space-Gard 2400 (Actual Size: 15.44 x 26.94 x 6.00 Inches) - Amazon.com
How to change Space-Gard or Aprilaire Media, Media Replacements
MERV 10 Air Filter for Air Purifier Model 2400 - AprilAire 401
AprilAire 1413 Air Filter Performance Upgrade Kit
401-02 - Aprilaire 401-02 - Merv 10 Replacement Media for Series 2400 Air Cleaners (Pack of 2)
Aprilaire 2400 Air Cleaner 29 9/16W x 10D x 17 3/4H Inch Non-Electric Whole-House Air Cleaner
Aprilaire 401 | Filter Media For Mfg No 2400 | 31TP08 | Raptor Supplies Worldwide
AprilAire 401 Replacement Air Filter 16" x 25" x 6" (MERV 10)
Honeywell POPUP2400 | Air Filters | Home Filters | DiscountFilters.com
Amazon.com: AprilAire 401 Replacement Furnace Filter for AprilAire 2400, Space-Gard 2400 Whole-House Air Purifiers - MERV 10, 16x25x6 Air Filter (Pack of 10) : Home & Kitchen
Aprilaire / Spaceguard #401 Media Filter Replacement - Homesergeant.com, an E. M. Sergeant Company