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.

1Wood double-hung: Andersen 400 Series, $310 per window.2Vinyl double-hung: Simonton Pro-Finish Contractor, $260.3Fiberglass double-hung: Integrity from Marvin Ultrex, $450.4Wood casement: Andersen 400 Series, $400.