Filter inside low flow modules 800518 & 800519 Back Catalog number: 201119 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 811-0934-01-R Belt Clip Replacement Kit for GilAir-Plus Price on request 810-1301-01 Gilian 800i Pump Only, No Charger Price on request 811-0601-01-R Single Unit Replacement Charger only, USB, BDX-2 Price on request