Pump Filter Kit (3 Filters, 3large o-rings, 3 sma Back Catalog number: 800556 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended GFPC447 Filter, 47mm, 0.4µm, Polycarbonate, Plain White, 1 Price on request 800485-171-2305 GilAir-3 R Pump, 5-Pack with Universal 5-Unit Char Price on request 910-0908-EU-R GilAir-Plus Data Logging 3-Pump Starter Kit, Euro Price on request