Filter, 37mm, 0.4µm, Polycarbonate, Plain White, 1 Back Catalog number: GFPC4537 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 811-0916-01-R Inlet Filter Replacement Kit for GilAir Plus with Price on request TE-26 Teflon Bag, Septum Valve (1.2L) Price on request 811-9932-02 Cyclone, Filter Cassettes, 37mm, European style fo Price on request