These Saibo Linear Motion Systems series of telescoping extension rails have stroke lengths that are 100% of the length of the assembly. The TDB28 series consists of 14 rails with stroke lengths from 148 to 1,202 mm (5.827 to 47.323 in) and supporting loads from 472 to 1,018 N (106 to 229 lb) when two rails are mounted in parallel and the load is distributed uniformly between the rails. The TDB43 series consists of 23 rails with stroke lengths from 246 to 2,026 mm (9.685 to 79.764 in) and supporting loads from 1,212 to 2,414 N (272 to 543 lb) when two rails are mounted in parallel and the load is distributed uniformly between the rails.