Cassette, 37mm 2pc 5.0µm PVC, 50/Box Back Catalog number: GCU37500PVC-2 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 910-0903-EU-R GilAir-Plus STP Single Starter Kit, Euro cord Price on request 810-0903-02-R STP, Bluetooth, Pump Only (No Dock) Price on request