Cyclone, BGI4L Replacement Grit Pot Back Catalog number: 811-9927-01 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 811-9927-08 Cyclone, 37mm Filter Screen Price on request GF25TQ Filter, Tissue Quartz, (99.90% retention of 0.3µm Price on request 201119 Filter inside low flow modules 800518 & 800519 Price on request