Section 67 in The Tamil Nadu Cinemas (Regulation) Rules, 1957
67.
The openings in front of the enclosure shall not be larger than is necessary for effective projection and of observation. No such opening shall exceed [20 centimetre square] [Substituted by G.O. Ms. No. 3999, Home, dated the 23rd November 1962.]:Provided that where a special type of film projector requires a wider opening the Chief Electrical Inspector may permit a larger opening up to a maximum of [60 centimetres square] [Substituted by G.O. Ms. No. 3999, Home, dated the 23rd November 1962.].
