GilAir Plus, DL to STP Upgrade (factory only) Back Catalog number: 811-0945-01-R Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended GB37R1000 Band, 37mm Shrink, Red 1000/Pack Price on request C-DFR Dual Flow Regulator Accessory, for ACTI-VOC and ACTI-VOC PLUS Price on request 783-0015-01 Lithium Ion Replacement Battery Pack for Nephelome Price on request