Conversion of Border Security fencing from Phase III to New design single row fence in various stretches BP. No. 261/5-S to 261/9-S (0.912 km), from 262/2-S to 266/1-S (8.50 km), from 292/10-S to 292/11-S (0.80 Km), from 346/MP to 346/4-R(0.800 Km), from 346/15-R to 346/2-S (0.900 Km), from 346/2-S to 347/MP (1.625 Km), from 357/1-S to 361/MP (5.162 Km), from 365/MP to 371/5-S (9.745 Km), 371/5-S to 385/2-S (30.217 km) and 386/MP to 387/MP (2.100 Km) Total Length 60.761 Km of West Bengal along Indo-Bangladesh Border (IBB) (SH- Stretches from BP. No. 380/5-RB to 385/2-S and 386/MP to 387/MP total Length 10.017 Km (Package-IV)