Filter, 47mm, 0.4µm, Polycarbonate, Plain White, 1 Back Catalog number: GFPC447 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 201169 Air Boss, Blue, GilAir-3/GilAir-5 Price on request 385-0114-01 Zero Cap, Black Rubber for Nephelometer Price on request 801446 Side Anti-Tamper Plate GilAir-3/5 Clock & Prog Mod Price on request