Section 11(4)(b) in The Central Reserve Police Force Rules, 1955
(b)The minimum standard laid down in sub-rule (a) in so far as it relates to height may be relaxed from 5'-7" to 5'-5" in the case of people having martial traditions such as Gorkhas, Garhwalis, Kumaonese, Dogras and Marathas.(bb)The minimum standard laid down in sub-rule (a) may be related--(i)in so far as it relates to height, from 5'-7" to 5'-4".(ii)in so far as it relates to chest measurement, from 311/2" expanded 331/2" to 30" expanded 32" for Adivasis.