Description Manuals Videos Articles Clemco 21684 - Filter, Air (MS), 1/2 Auto Drain Customers Also Viewed Filter, air (MS), 1-1/2" AD (SMC) #22364 $323.98 Air Filter, 1 inch Manual Drain (SMC) #22424 $206.61 MS Air Filter - 1/2 inch #01308 $104.50