Filter inside low flow modules 800518 & 800519 Back Catalog number: 201119 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 910-0205-02 GilAir-3 Clock [ATEX], 5-Pack (With Universal 5-Un Price on request 811-9927-03 Cyclone, BGI4L Replacement Screw Kit Price on request 380-0015-01 Screwdriver, Reversible, GilAir-3/GilAir-5/BDX-II Price on request