Shut your Larson door and locate the bottom sash from the inside of the door.
Press down on the finger-pull latches on the bottom sides of the sash glass.
Grasp the bottom of the sash and pull it out to a horizontal angle.
Tilt the glass sash to the left to remove the top tilt keys from the window's track sash.
Pull out the glass sash all the way. With the sash removed you can clean it with glass window cleaner.