Filter inside low flow modules 800518 & 800519 Back Catalog number: 201119 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 800331 Safety Tape-10 Feet Price on request 910-0801-04 Gilian 5000 5-Pack, UL ATEX 120V/240V , No Cord Price on request 910-0914-NO-R GilAir-Plus Data Logging 3-Pump Starter Kit, Bluet Price on request