Filter inside low flow modules 800518 & 800519 Back Catalog number: 201119 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 800844-2-230 Gilibrator-2 Standard Flow Diagnostic Kit, 230V, E Price on request 811-0012-01 Gilian 800i/5000/10i/12 Replacement filter, pkg 10 Price on request KB-05-10 Kynar Bag 0.5L Pack of 10 Price on request