Section 47(ii) in The Medicinal And Toilet Preparations (Excise Duties) Rules, 1955
(ii)The windows of the "spirit store" "laboratory" and "finished store" shall be fitted with malleable iron bars not less than 19 mm. in thickness, set not more than 102 mm. apart and fixed in the brick-work to a depth of at least 51mm. at each end. On the inside of each window there shall be securely fastened to the bars stout wire-netting the aperture of which shall not exceed 25 mm. in diameter.
