It is easier to remove the upper sash by working on the window from the outdoors, if this is possible.

When the strip is off, remove the sash and unfasten the cords or chains as described.

Before making repairs, try to remove the sash entirely from the window frame, so you can lay it flat on a work suface.

Removing the sash from her robe, she tied his hands together.

Disconnect any cords, chains or balance mechanisms as described, remove the sash and set it aside.

After removing the sash from the frame, simply slide the new tab into a groove in place of the old one.

Then, if possible, remove the sash from the window and place it flat on several thicknesses of newspaper.

Then remove the sash and set it aside while you pry off the remaining stop.

To remove the upper sash, first remove any spiral-lift mechanisms.

Unfasten any balance mechanisms, then remove the sash and set it aside.