The all-metal flush mount valve is a Universal standard connect, low-volt type. Two low-volt pickups are mounted inside the hose opening which are used to signal your central vacuum power unit. The low-volt connectors come pre-wired and include a pair of wire nuts to connect to your existing central vacuum low-volt signal system. Color matched screws are also included in the package for securing the inlet to a mounting bracket. New installations will require a mounting bracket, sold separately. Fits all universal mounting brackets including Vaculine, Hayden, Plastiflex and others where the mounting screws are 3 7/8 inches apart. Sold 1 each, Chrome in color. Mounting screws and wire nuts included.