Apparatus and method for removably attaching window treatments

In combination, a mounting system for supporting a window treatment and a window frame having a forward facing vertical external surface, a downwardly facing horizontal internal surface, a rightward facing vertical internal surface extending downwardly from the horizontal surface, a leftward facing vertical internal surface extending downwardly from the horizontal surface and facing the rightward facing internal surface;

• wherein the internal surfaces are perpendicular to the vertical external surface and define part of a window opening;
• the mounting system comprising:
• a left external wall mount mounted on the vertical external surface;
• a right external wall mount mounted on the vertical external surface;
• a left internal wall mount mounted on one of the rightward facing surface and the horizontal surface;
• a right internal wall mount mounted on one of the leftward facing surface and the horizontal surface;
• a left window treatment support;
• a first mounting bracket carried by the left support and removably mountable on the left external wall mount for removably mounting the left support external to the opening;
• a second mounting bracket carried by the left support and removably mountable on the left internal wall mount for removably mounting the left support within the opening;
• a right window treatment support;
• a third mounting bracket carried by the right support and removably mountable on the right external wall mount for removably mounting the right support external to the opening;
• and
• a fourth mounting bracket on the right support removably mountable on the right internal wall mount for removably mounting the right support within the opening.