Inlet Filters, Replacement for GilAir Plus, Pack o Back Catalog number: 811-0905-01-R Manufacturer: SENSIDYNE Availability: 3 weeks Price on request - + Recommended 811-9917-05 Go-Cal Dampening Module Price on request 910-0910-NO-R GilAir-Plus Data Logging Single Starter Kit, Bluet Price on request 360-0135-01 GilAir PlusQuick Start Guide Price on request