Filter, Support Pads, Porous Plastic, 37mm, 20.0µm Back Catalog number: GPP3700 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended SC-1 Tedlar Bag (0.5L) Price on request TE-26 Teflon Bag, Septum Valve (1.2L) Price on request 800573-100 Diagnostic Panel only, Hi/Lo (2-50cc, 20-200cc, 0. Price on request