Air Disc valve/air diffuser 1.Material:Galvanized Steel 2.Colour: white powder coated 3.RAL9010/9016 other colors available Air disc valve- For Supply Air- Made of Galvanized Steel, Rustproof- Removable Core- With Collars- 5 Sizes, 100, 125,150, 160, 200- Powder Coated, Standard Color RAL 9010/9016, other Colors Available Air Disc Valve/air diffuser