Jason Holder starred as the West Indies beat Bangladesh by 166 runs in Jamaica, with 19 wickets falling on the third day, to complete a 2-0 series triumph.
The hosts resumed on 19 for one, looking to build on their overnight lead of 224, but were skittled for 129 as Shakib Al Hasan took six for 33 and Roston Chase top-scored with only 32.
But Bangladesh, chasing an unlikely 335 in a low-scoring game, lost opener Tamim Iqbal in the third over and slid to 67 for four before a stand of 54 between captain Shakib and Mushfiqur Rahim offered some hope.
Holder removed Mushfiqur and Nurul Hasan in successive balls and when Shakib was dismissed for 54, it spelled the end.
Holder took the final two wickets to finish with career-best figures of six for 59 in the innings and 11 for 103 in the match.
