Measurements: Exterior dimensions: 5-1/4 in. (13 cm.) height, 2-3/4 in. (7 cm.) width, 1-1/2 in. (3.8 cm.) depth; Interior dimensions: 1 in. (2.5 cm.) height, 2-1/4 in. (5.7 cm.) width, 3/4 in. (19 mm.) depth; Lock box shackle is 1-13/32 in. (36 mm.) long, with 1-7/8 in. (48 mm.) width and 13/32