Trademark Home 82-5321 Wireless Closet Light with Concealed Safe 8-Inch Diameter This safe has a unique twist lock that locks the top and bottom of the safe together. closet light is 8 inches in diameter and 3 inches thick. Inside dimensions of the safe are 7.75 x 7.75 x 1.5 inches and is divided into 2 shelves. Closet light is a real light with an easy wireless mount and requires four AA batteries that are not included.