Filter inside low flow modules 800518 & 800519 Back Catalog number: 201119 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 910-0905-EU-R GilAir-Plus Data Logging 5-Pump Starter Kit, Euro Price on request GFG858X10 Filter, Glass Fiber, Binderless, 1.1µm, 8" x 10", Price on request GFG85037MM Filter, Glass Fiber, Binderless, 1.1µm, 37mm, 100/ Price on request