(1) The Chief Elections Officer shall supply to each returning officer a number of ballot boxes equal to the number of polling stations in his or her electoral district.
(2) Every ballot box shall be made of some durable material, with one lock and key and a slit or narrow opening in the top, and so constructed that the ballot papers may be introduced therein but cannot be withdrawn therefrom unless the box is unlocked.
(3) The ballot boxes shall be of such size as to accommodate therein all the election documents which the presiding officer is required by section 63(10) of this Act, to transmit or deliver to the returning officer and all other election supplies except ink and pencil.