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 800412 Kit-Damper-Diaphragm Std Flow Price on request 800322 Damper Assy High Flow Price on request TE-22 Teflon Bag, On-Off Valve (0.5L) Price on request