Filter inside low flow modules 800518 & 800519 Back Catalog number: 201119 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 783-0014-01-R GILAIR PLUS BATTERY PACK, DC BACK PACK Price on request C-BIO02-01 BioVOC-2 Breath Sampler, pk 1 Price on request KB-50 Kynar Bag 50.0L Price on request