You can from our point of view, yes. The location of the door or entrance to the shower is typically determined by the general bathroom layout. This in turn will determine the best position for the shower rose, to prevent water spraying directly onthe door, which in turn sets the ideal location of the channel drain. The most common position is below the shower rose however because the fall (angle) of the floor is not steep, the channel can easily be situated on any side of the shower - including at the doorway. If your shower is part of a refurbishment you may have issues with getting the plumbing underneath positioned but talk to us because we have a number of options.