A window sash is the pane of glass and the affixed wooden, vinyl or aluminum framework. A sash fits into a window frame in a sliding track. A window sash replacement kit provides the new sashes and jamb hardware for your window. New jambs and sashes improve your energy efficiency and can fit the architecture of your home. To replace a sash, use the following instructions.
Step One
Select a Replacement Kit - Measure the existing window sash width from inside one side jamb to the other.