Filter inside low flow modules 800518 & 800519 Back Catalog number: 201119 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended GCO37DNL Band, 37mm Shrink, White, 1000/Pack Price on request 910-0906-NO-R GilAir-Plus STP 5-Pump Starter Kit, No cord Price on request 800485-171 GilAir-3 R Pump, No Charger Price on request