Filter inside low flow modules 800518 & 800519 Back Catalog number: 201119 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended GB37R1000 Band, 37mm Shrink, Red 1000/Pack Price on request 811-0505-01-R Single Unit Replacement Charger only, USB Gilibrator Price on request 910-0906-EU-R GilAir-Plus STP 5-Pump Starter Kit, Euro cord Price on request