Replacement Merv 11 Standard Pleat Filter for the Quest PowerDry 4000 Portable Dehumidifier and the Dual 105, 155, 205 and 215 Dual Overhead Dehumidifiers. Captures particles (including mold spores) down to 1 micron in size
Quest Air Filter for Quest Dual Overhead Dehumidifiers 105, 155, 205, 215 and PD 4000