Filter, Support Pads, Porous Plastic, 37mm, 20.0µm Back Catalog number: GPP3700 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 910-0903-NO-R GilAir-Plus STP Single Starter Kit, No cord Price on request 811-0507-01-R Power Adapter, Universal Wall w/USB A to USB B cab Price on request 811-0905-01-R Inlet Filters, Replacement for GilAir Plus, Pack o Price on request