Section 160Omnibus Election Code of the Philippines (Batas Pambansa Blg. 881), Sec. 160

Ballot boxes. -

(a) There shall be in each polling place on the day of the voting a ballot box one side of which shall be transparent which shall be set in a manner visible to the voting public containing two compartments, namely, the compartment for valid ballots which is indicated by an interior cover painted white and the compartment for spoiled ballots which is indicated by an interior cover painted red. The boxes shall be uniform throughout the Philippines and shall be solidly constructed and shall be closed with three different locks as well as three numbered security locks and such other safety devices as the Commission may prescribe in such a way that they can not be opened except by means of three distinct keys and by destroying such safety devices.

(b) In case of the destruction or disappearance of any ballot box on election day, the board of election inspectors shall immediately report it to the city or municipal treasurer who shall furnish another box or receptacle as equally adequate as possible. The election registrar shall report the incident and the delivery of a new ballot box by the fastest means of communication on the same day to the Commission and to the provincial election supervisor.