Cyclone, 37mm Filter Screen Back Catalog number: 811-9927-08 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 783-0008-04 Battery Pack, Replacement BDX II, NiMH Price on request 910-0912-EU-R GilAir-Plus Data Logging 5-Pump Starter Kit, Bluet Price on request GF47500PVC Filter, PVC, 5.0µm 47mm, 100/Pack Price on request