Unfold Film and Tape Bottom

What happens here

Once both vertical sides are taped, fully unfold the masking film so it completely covers the lower portion of the window. Take another piece of 1-inch 3M 2020 masking tape and tack down the bottom of the film. Then, starting from one bottom corner, apply a continuous strip of tape along the entire bottom edge of the window frame. Carefully roll the excess masking film up underneath the tape as you apply it to create a neat and secure finish.

Goal: Completely cover the window with masking film and secure its bottom edge.