Should the linear drain be the entire width of shower?

Your linear drain doesn't need to be the entire width of the shower. In fact, our drains would be hard to fit wall to wall as the drains have a flange that exceeds the length of the visible drain channel which would mean that the drain flange would be under the walls in a wall to wall application. for visual appeal we recommend leaving at least a similar distance for the ends of the drain as from the side to the wall.