Remove the inside stop pieces from the window. Take care when removing these pieces, you'll reuse them when installing the new windows. 2. Remove the inside sash. 3. Slide the outside sash to the bottom of the window. 4. Clean the window jambs and sill thoroughly.

A replacement window is a window that is installed in an existing window opening as replacement of the existing window. Old weather beaten windows deteriorate and become loose and drafty.