Description Manuals Videos Articles Popular Accessories This is a 1” manual drain air filter for machines with 1” piping. Customers Also Viewed Clemco 1-1/2 inch Air Filter, Manual Drain #22363 $364.43 MS Air Filter - 1/2 inch #01308 $124.51 Clemco SG-300 Portable Suction Blast Gun with… #02641 $793.96