Section 24B(15) in Maharashtra Cinemas (Regulation) Rules, 1966
(15)The screen shall be so constructed as to withstand wide velocity of 160 kilometres per hour, or a pressure of 120 kilomgrams per square meter. The screen shall be inclined slightly forward. The maximum inclination shall be 8° (eight degrees) with the article axis. The screen or a part thereof shall not be visible from the entrance of adjoining road.