Inlet Filters, Replacement for GilAir Plus, Pack o Back Catalog number: 811-0905-01-R Manufacturer: SENSIDYNE Availability: 3 weeks Price on request - + Recommended 811-9922-01-R Single Unit Replacement Charger only, USB GilAir-3 Price on request GF25TQ Filter, Tissue Quartz, (99.90% retention of 0.3µm Price on request 811-0303-01-R Single Unit Replacement Charger only, USB, LFS-11 Price on request