The wall mounted portion of the structure is made of ABS plastic, and is fully concealed within the Stainless Steel body. This new and innovative modular design enables easy in-the-field service should the product needs it.Touchless Wall Mounted Aroma Dispenser/Air Freshener In Polished Gold SMALL QUANTITY ORDERS ARE NO PROBLEM. We're thankful for the support that we've received from the design community, and are delighted at the opportunity to continue to provide EXCEPTIONAL value in design and architecture.