Filter, 37mm, 0.4µm, Polycarbonate, Plain White, 1 Back Catalog number: GFPC4537 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 811-1604-NO Gilian 12 Power Module, No Cord Price on request GFPC837 Filter, 37mm, 0.8µm, Polycarbonate, Plain White, 1 Price on request GCU37AE Cassette, 37mm 3pc w/ Type A/E Glass Fiber, 50/Box Price on request