In modern sash windows, you're far more likely to find a spring stability (or sash equilibrium) procedure. This is the spring-loaded system which counters the drive of gravity, in impact Keeping your sash window open up without the will need for cords, pulleys and those metal counterweights.  To handle this, https://easy-makeup-looks-for-beg35555.ambien-blog.com/42044074/5-simple-statements-about-sash-windows-explained