A sash window is the traditional fashion of window in the united kingdom, and lots of other places that were formerly colonized through the United Kingdom, with components (sashes) that overlap slightly and slide up and down inside the body. The two components aren’t always the equal size. Currently most new double-hung sash windows use spring balances to guide the sashes, however historically, counterweights held in containers on either side of the window have been used. Those were and are connected to the sashes using pulleys of either braided cord or, later, purpose-made chain. 3 styles of spring balances are called a tape or clock spring stability; channel or block-and-address balance; and a spiral or tube stability.
Double-hung sash home windows were traditionally regularly outfitted with shutters. Sash home windows may be equipped with simplex hinges that permit the window be locked into hinges on one side, at the same time as the rope on the other facet is indifferent—so the window can be opened for hearth escape or cleaning.