Filter inside low flow modules 800518 & 800519 Back Catalog number: 201119 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 611-0902-01-R Dual Manifold High Flow Splitter only, Top Access Price on request 810-0202-02 GilAir-3 Clock with timer (ATEX), Pump only Price on request 811-0507-01-R Power Adapter, Universal Wall w/USB A to USB B cab Price on request