Filter inside low flow modules 800518 & 800519 Back Catalog number: 201119 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 800885-171 GilAir-5 RC Pump, No Charger Price on request 360-0166-01 Manual, Gilian 800i Price on request 202316 Gilibrator 2 Plate Mounting Price on request