Noble Electronic Digital Safe Home Office Anti Theft Closet Security Model St-25E In Tan battery operated security safe; requires 4 AA batteries, included 2 live action steel locking bolts and concealed hinges for greater security Pre-drilled holes for mounting to the floor or the wall (hardware provided) Outside Dimensions 10" x 13" 3/4'' x 9 3/4" Inside Dimensions 8" x 13 1/4" x 9 1/4"