Filter, Support Pads, Porous Plastic, 37mm, 20.0µm Back Catalog number: GPP3700 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 910-0907-EU-R GilAir-Plus Basic 3-Pump Starter Kit, Euro cord Price on request 910-0302-02 LFS-113 D Pump, 5-Pack, 230V, Euro Plug Price on request 375-0009-01 Carrying Case for Nephelometer Price on request