Filter, Support Pads, Porous Plastic, 37mm, 20.0µm Back Catalog number: GPP3700 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 911-0501-NO-R Single Unit Charger w/ Power Adapter, USB Gilibrat Price on request C-B100M BioVOC Disposable Cardboard Mouthpieces, pk 100 Price on request GCCS10 Cassette, Carpet Sampling, 10/Box Price on request