Filter, Support Pads, Porous Plastic, 37mm, 20.0µm Back Catalog number: GPP3700 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 811-9918-03 Go-Cal AC Adapter Euro, 100-240V Price on request GCU37080MW-2 Cassette, 37mm 2pc 0.8µm, MCE Matched (50µg), 50/B Price on request 783-0014-01-R GILAIR PLUS BATTERY PACK, DC BACK PACK Price on request