MAF-1 Emerson MoistAIR Humidifier Wick Filter Emerson MoistAIR replacement wick filter for models MA0950, MA1200, MA1201, MA09500, MA12000, MA12001 and MA12010. Measures approximately 8 x 31 3/4 x 1. AntiMicrobial agent prevents surface growth and migration of mold, fungus, algae, and bacteria.