Lock boxes require fewer locks and are lighter than hasps on delicate energy isolating devices like circuit breakers. Our portable metal lock box is made of heavy-duty steel and is powder coated for extra rust resistance. Accommodates up to 12 padlocks on lid, plus lockable clasp on front (locks not included). Can also be used as a lock storage box holding up to 40 padlocks. Slot in front allows keys to be inserted when box is locked.