The Nutone Vacuum System wall inlet features an automatic on/off. Inlets have a styrene snap back protective cover. This Vacuum System wall inlet measurements are 3'' w x 5-3/16'' h x 1/2'' d. This Vacuum System wall inlet is to be installed with a CF329 mounting plate or CI3301RK or CI3303RK rough-in kits. This Vacuum System wall inlet has a white finish.