What is the difference between plank and 3-strip formats?

Plank is made using a 1820mm or 2200mm long continuous strip of 145mm, 190mm or 220mm wide wood veneer and offers an elegant, clean and more uniform look. 3-strip is made using random short lengths of timber laminated together three-wide to form a 190mm wide board. 3-strip has more character because of the variation in colour. It is more affordable and has the advantage of hiding marks especially in the darker timbers.