Complete Compressed Air Treatment Center The CT series desiccant air dryers remove water vapor from the compressed air down to a dew point of -40? F Quick change 10 lb. desiccant cartridge bag is made of a special fiber media which removes oil aerosols and solid particles down to .01 microns - meaning no need for coalescing or final filters Replacement DV130504 Quick Change Desiccant Cartridge