Inlet Filters, Replacement for GilAir Plus, Pack o Back Catalog number: 811-0905-01-R Manufacturer: SENSIDYNE Availability: 3 weeks Price on request - + Recommended GP25 Filter Support Pads, Porous Plastic, 25mm, 100/Pac Price on request 811-1004-04 PM-4.0 Impactor Kit, Replacement for Models 810-10 Price on request 201044-10 Filter Housing, Front, GilAir-3/GilAir-5 Price on request