Filter, PTFE with Polypropylene Backing, 0.5µm, 37 Back Catalog number: GF37050T Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 811-1004-02 PM-10 Impactor Kit, Replacement for Models 810-100 Price on request 800255 Single Variable Flow Kit, 7-10 x 110mm Price on request 360-0166-01 Manual, Gilian 800i Price on request