Product review (4 stars): Made it work...
Like other reviewers I found the side tube to be too short.  It only extends about 1/4" past the outside wall of the dryer.  You can pull it out a little more but then you are not all the way seated on the inside corner piece.  I used one of the original pieces of tubes that was removed during installation and cut it to perfect size with a hacksaw.  Problem solved,  but LG should make this about and 1" longer at a minimum.  Installation is fairly easy without removing any of the walls of the dryer.  Its a little tricky putting the seal tape on straight but take your time and try multiple smaller pieces.