Andre Russell scored a 21-ball 43 in the 1st qualifier.
JP Duminy smashed an unbeaten 41-ball 84 in the Eliminator match.
Kieron Pollard is set to return after the completion of the T20I series against India.
Both teams are in good form, having won their last two matches.
Montreal Tigers won the 12-over game by 24 runs.
The stage is all set for the big final
CWI-B make it into the final of the Global T20 Canada.
For the first time in the tournament, David Warner got to double figures with the bat.
Warner's average is just 2.40 in the ongoing Global T20 Canada
Derval Green erupted in jubilation following the masterclass of a catch by his teammate.