Quest 506 - MERV 13 Replacement Filter Dehumidifier Replacement Filter:Quest MERV 11 Standard Pleat Air Filter for PowerDry 4000, Dual 105, 155, 165, 185, 205, 225, CDG 174, Dry 132D, Hi-E Dry 120, 195 Dehumidifiers protect roots

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Quest 506 - MERV 13 Replacement Filter Dehumidifier Replacement Filter:Quest MERV 11 Standard Pleat Air Filter for PowerDry 4000, Dual 105, 155, 165, 185, 205, 225, CDG 174, Dry 132D, Hi-E Dry 120, 195 Dehumidifiers protect rootsAvailable Replacement Filters for Quest Dehumidifiers: Quest H5 MERV 8 Pre filter Quest H5 HEPA Air Mover filter. Quest 70 MERV 13 Replacement filter Quest 110 & 150 Dual Dehumidifiers MERV 13 Replacement filter Quest 355 MERV 13 Replacement filter. Quest 506 MERV 13 Replacement filter Quest MERV 11 Standard Pleat Air Filter for PowerDry 4000, Dual 105, 155, 165, 185, 205, 225, CDG 174, Dry 132D, Hi E Dry 120, 195 Dehumidifiers