Filter, 25mm, 0.4µm, Polycarbonate, Plain White, 1 Back Catalog number: GFPC4525 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 811-9922-01-R Single Unit Replacement Charger only, USB GilAir-3 Price on request 800508-171-2301 GilAir-3 RC Pump, Starter Kit, 230V Euro Style Plu Price on request C-BIO02-01 BioVOC-2 Breath Sampler, pk 1 Price on request