Brand new, sealed, in box:
Brooks Instrument MFC
Model GF81
Part # GF081XXXC-0007400L-V1VSD5-XXXXXAX-00C
Devicenet
300 slm
1/2" VCR connections
Full spec: http://www.brooksinstrument.com/products/mass-flow-controllers/thermal-metal-sealed/gf80-series
Fast, safe & reasonably priced shipping.