Filter, 37mm, 0.4µm, Polycarbonate, Plain White, 1 Back Catalog number: GFPC4537 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 400692 Battery Pack, NiMH for old style Gilibrator Price on request 800844 Diagnostic Panel with Carrying Case (2-50cc, 20-20 Price on request 811-9918-02 Go-Cal AC Adapter NEMA, 100-240V Price on request