Cassette, 37mm, 3pc, 0.8µm MCE 50/Box Back Catalog number: GCU37080 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 811-1004-01 PM-2.5 Impactor Kit, Replacement for Models 810-10 Price on request 783-0018-01 Battery Pack, Gilian 12 (NiMH) Price on request 811-9917-01 Go-Cal Replacent Filter Price on request