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 810-0903-01-R STP Pump Only (No Dock) Price on request 800518 Low Flow Module, Blue, GilAir-3/GilAir-5 Constant Price on request 811-1710-01-R Gilibrator 3, High Flow Dry Cell (Flow Range 1 - 3 Price on request