Remove the lower sash from the window frame first, then the upper sash. Use a screwdriver to open and remove the doors on each side of the cavities to access the weights. Remove both weights.

Double-hung windows allow both the bottom and the top sash to move so you can have two sashes open at the same time. Even though they look identical from the street, there are some major factors ...

These models typically consist of two sashes and a box. In double-hung windows, both sashes move over one another to open. Single-hung sash windows have just one moving sash, while the other one ...