Cassette, 37mm, 3 pc, 0.4µm Polycarbonate, 50/Box Back Catalog number: GC7345PC Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 811-1004-04 PM-4.0 Impactor Kit, Replacement for Models 810-1002 and 810-1003 Price on request GCAOC10 Cassette, Air-O-Cell 10/Box Price on request 811-9925-01 Cyclone, GK4.162 -RASCAL Cyclone (9LPM Respirable-US) (Uses 47mm Cassettes) Price on request