Filter inside low flow modules 800518 & 800519 Back Catalog number: 201119 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended KB-25-5 Kynar Bag 25.0L Pack of 5 Price on request 201044-10 Filter Housing, Front, GilAir-3/GilAir-5 Price on request 800844-4-230 Gilibrator-2 Deluxe Diagnostic Kit, with Printer 2 Price on request