the NuTone Louvered Grille Wired Door Chime - its flush-mount cover is paintable. Crafted with a classical ventilated design in clean, this doorbell system a two-note gong for the fore door and a one-note gong for another door. a 16V transformer -LRB- not included -RRB-. White grille cover is paintable. for rosiness mounting. 2-note harmonious with 1 or 2 doors. 16V transformer -LRB- not included -RRB-. : 5.69 W x 2.25 D x 7.63 H Inch.