Filter, MCE, 0.8µm, 25mm, PCM, No Grid, 100/Pack Back Catalog number: GF25080 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 811-1004-01 PM-2.5 Impactor Kit, Replacement for Models 810-1002 and 810-1003 Price on request 801385 Case Assembly & Screws, Blue, GilAir-5 Price on request 800884-171 GilAir-5 RP Pump, No Charger Price on request