The Minor Counties Championship is to switch to three-day matches from the 2001 season.
The 20 members clubs voted 15-3 in favour (with two abstentions) at Lord's on October 11 to replace the traditional programme of nine two-day games with six three-day fixtures in a three-year experiment.
The two regional divisions will remain the same, meaning that each team will not play all the other nine in their section every year.
Instead there will be a three-year cycle before each team has met all nine opponents on a home and away basis.
Each county will play three home and three away matches during each season.