Mounting brackets are typically located on a 2x4 wall frame. These brackets will work together with a Central Vacuum Wall Inlets.
The Bracket may be mounted on either wood or metal which can be located behind sheet rock. This bracket couples Central Vacuum Pipe to an Inlet Valve. It reduces the PVC Pipe of the Central Vacuum from 2" to 1.5" diameter to accept a Central Vacuum Hose.