Filter inside low flow modules 800518 & 800519 Back Catalog number: 201119 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 801000-1 Power Module, 120V/230V/DC, without plug (used wit Price on request 811-9925-01 Cyclone, GK4.162 -RASCAL Cyclone (9LPM Respirable- Price on request 800093-3 Inlet Filter Replacement Kit, LFS-113 (Packg of 3) Price on request