Single Variable Flow Starter Kit (Includes 6x70mm, Back Catalog number: 800252 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 GH37C Housing, 37mm, Conductive 3pc, 50/Box Price on request 800556 Pump Filter Kit (3 Filters, 3large o-rings, 3 sma Price on request