Filter inside low flow modules 800518 & 800519 Back Catalog number: 201119 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended GB37C Band, 37mm Shrink, Clear 100/Pack Price on request 811-1709-01-R Gilibrator 3, Standard Flow Dry Cell (Flow Range 5 Price on request 910-0107-02 GilAir-5 Program [ATEX], Starter Kit, 230V, Euro P Price on request