Filter, 37mm, 0.4µm, Polycarbonate, Plain White, 1 Back Catalog number: GFPC4537 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 911-0601-NO-R Single Unit Charger w/ Power Adapter, USB, BDX-2- Price on request 910-0108-02 GilAir-5 Program [ATEX], 5-Pack (With Universal 5- Price on request 910-0202-02 GilAir-3 Basic [ATEX], 5-Pack (With Universal 5-Un Price on request