Filter, PTFE with Polypropylene Backing, 0.5µm, 37 Back Catalog number: GF37050T Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 783-0008-03-R Battery Pack, GilAir-3UL, ATEX, NiMH Price on request 810-1301-01 Gilian 800i Pump Only, No Charger Price on request 811-0944-03-R GilAir Plus, STP to STP BlueTooth and Motion Upgra Price on request