ColorTech BT fume cupboard outlets are available in whatever finishes and colors are desired for the particular application. Unless otherwise specified, the standard finish for outlets is (i) for the flange, a colored powder coated finish coded per the service color, and (ii) for the body of the fitting and serrated hose end, a white powder coated finish. Standard finishes are therefore as follows:

Service Color
Outlet-Green-BT Water Green
Outlet-Yellow-BT Flammable Hydrocarbons Yellow
Outlet-Red-BT Other Combustible Gases Red
 Outlet-Blue-BT Non-Flammable Gases Blue
 Outlet-Black-BT Toxic Gases Black
 Outlet-Gray-BT Vacuum Gray