Yes, earlier the minimum height required for Male was 5 feet 4 inches and for female it was 5 feet 2 inches. These rules were derived from Army ,but recently two serving CSPs won the case as they were not allowed to join PSP due to their disabilities. Previous decisions made by court serve as the source for new law ,and now the law allows even disable aspirants to join top groups. So, height is not an issue now along with other physical constraints.