Central Vacuum Wall Plate Inlet Valve 3″x 5″ with the InterVac Design logo. Comes with D-915 custom reducer fitting so the installer can use a standard 2″ vacuum fitting on the back side. Rectangular inlet vave for a central vacuum, 3"x 5" with the InterVac Design logo. This also comes with our D-915 custom reducer fitting so the installer can use a standard 2" vacuum fitting on the back side. The inlet on this vavle is 32mm and works with most all central vacuum hoses.