Honeywell Replacement Media Air Cleaning Filter, 20 in Width, 4 in Depth, 25 in Height, MERV: 11, 0.3 to 1 micron E1 Small Particle/1 to 3 micron E2 Medium Particle/3 to 10 micron E3 Large Particle, 85% Efficiency, Import
New MERV 10 (at 492 FPM) performance with lower pressure drop at no additional cost.