General Info
Model: Square Box 52151-K
Size: 4 inches x 4 inches x 1-1/2 inches
Material: Galvanized steel
Standard: cETL Approved
Volume: 21 cubic inches
(4) 1/2"(2) 3/4"Concentric Knockout Bottom,
(10) 1/2", (6) 3/4" Concentric Knockout Side
Number of Knockouts: 22