Filter, Support Pads, Porous Plastic, 37mm, 20.0µm Back Catalog number: GPP3700 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 297-0012-01 USB Communications Cable for Nephelometer Price on request 910-0108-02 GilAir-5 Program [ATEX], 5-Pack (With Universal 5- Price on request GFPC4525 Filter, 25mm, 0.4µm, Polycarbonate, Plain White, 1 Price on request