Filter, 37mm, 0.4µm, Polycarbonate, Plain White, 1 Back Catalog number: GFPC4537 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 400667 Soap Dispenser, Gilibrator/Gilibrator-2 Price on request 615-0910-01 Cd with software, manuals and USB drivers Price on request 811-1004-01 PM-2.5 Impactor Kit, Replacement for Models 810-10 Price on request