Filter, 47mm, 0.4µm, Polycarbonate, Plain White, 1 Back Catalog number: GFPC447 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 811-9917-04 Go-Cal Carrying Case, Soft Price on request 800061 Cyclone, Dorr-Oliver, 10mm - Nylon (1.7LPM-US) Price on request GCO37050 Housing, 37mm, 3Pc, 50/Box Price on request