Filter inside low flow modules 800518 & 800519 Back Catalog number: 201119 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 850190M Manual, Gilibrator-2 Price on request 800510-171-2305 GilAir-3 RP Pump, 5-Pack with Universal 5-Unit Cha Price on request 801146 Impinger Holder Mounting Bracket, GilAir (required Price on request