When the delivery box lid is closed, the unit automatically locks. julio iglesias I didn't design the box to be burglar proof. Rather it is a deterrent from thieves who spontaneously walk/drive by. It is 41 1/2" L bear attack X 23 3/4" W shake shack X 24 1/4" L . DETAILS AND DIAGRAMS:
LOCKING MECHANISM:
3 COMPARTMENT DELIVERY BOX:
