Atomic 20x25x4 210 MERV 11 Replacement Furnace Filter Aprilaire and Space-Gard 4200 Compatible

The Atomic Filters replacement furnace filter for Aprilaire 210. Atomic's After Market Compatible for 4200 MERV 11 filter for Space Gard / Aprilaire Furnace Filters is preassembled filter for easy installation.

Atomic compatible replaces the OEM AprilAire Models 1210,1620, 2210, 2216, 3210, and 4200  High-efficiency filter media collects small dust particles before they can collect on your coils and more importantly protects the air you breathe in your home. This filter features a superior sturdy frame construction. Depending on air quality and usage, this SpaceGard 4200 Filter should be replaced every 6 to 12 months for best performance. Installation is quick and easy.