Check the listing for details. Replacement Desiccant Element DE401 READING TECHNOLOGIES, INC. 810900030584 Air. Condition: New, Made in US. Listed at 94.18 USD. Replacement Desiccant Element Polycarbonate cartridges do not have fiber bag to migrate into paint jobs. Activated alumina desiccant beads. Takes less than 2 minutes to change. Remove water and water vapor DE401.