Section 87(1A) in The Indian Post Office Rules, 1933
(1A)The specification and design of water tear resistant envelope referred to in time(ii) of sub-section (1) shall be approved by the Director General, Department of Posts and shall bear particulars of approval and details of manufacturer on the reverse of the envelop.] [Substituted by Notification No. G.S.R. 532 (E), dated 3.8.2007]
