Housing, 25mm, Classic Style, 3pc, Conductive, 50/ Back Catalog number: GH25 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 KB-5-10 Kynar Bag 5.0L Pack of 10 Price on request GCU37080 Cassette, 37mm, 3pc, 0.8µm MCE 50/Box Price on request