Filter, 37mm, 0.4µm, Polycarbonate, Plain White, 1 Back Catalog number: GFPC4537 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 783-0007-01 Battery Pack, Replacement for Gilian 5000, 800i & Price on request 800252 Single Variable Flow Starter Kit (Includes 6x70mm, Price on request 7013376 Cyclone Calibration Jar (For 10mm Nylon Cyclone an Price on request